Ergon SMC Women's Sport Gel SaddleThis women's MTB saddle replaces the world-proven SMC4 and offers gender optimised contact areas for female sit bones, combined with exceptional freedom of movement. It features a microfibre cover construction, which is perfect at handling multiple changes to your riding position as you navigate across the mountain bike trails. Ergon has also equipped this model with CrMo rails, so you can benefit from its strong and reliable hold to your seatpost on the most challenging of rides. One final highlight is its orthopaedic comfort foam with gel pads, which relieves pressure and provides long-lasting comfort. Features:Shell: Nylon CompositeRails: CrMoCover: MicrofibrePadding: Orthopaedic Comfort Foam with Gel PadsWeight:: 295g (S/M), 320g (M/L)Buy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Developed in conjunction with Fab Barel, Richie Rude, Cody Kelly, Joe Barnes, Remy Metailler to name but a few. The narrow and short V-Shape, seating surface ensures optimum, freedom of movement and easy, position shifting. The saddle enhances steering input and control to the bike through the inside of your thighs, hence the contact zones being padded all-around.Key Features: Shell: Nylon Composite, Rails: CroMo , Cover: Microfibre, Side Flanks: Yes, Edge Protection: Yes , Padding: Orthopaedic AirCell Foam, Weight: 245g (S/M), 250g (M/L).
Ergon SMC Women's Sport Gel SaddleThis women's MTB saddle replaces the world-proven SMC4 and offers gender optimised contact areas for female sit bones, combined with exceptional freedom of movement. It features a microfibre cover construction, which is perfect at handling multiple changes to your riding position as you navigate across the mountain bike trails. Ergon has also equipped this model with CrMo rails, so you can benefit from its strong and reliable hold to your seatpost on the most challenging of rides. One final highlight is its orthopaedic comfort foam with gel pads, which relieves pressure and provides long-lasting comfort. Features:Shell: Nylon CompositeRails: CrMoCover: MicrofibrePadding: Orthopaedic Comfort Foam with Gel PadsWeight:: 295g (S/M), 320g (M/L)Buy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The uncompromising saddle for modern downhill racing. Born from years of experience on the Downhill World Cup and through feedback from the fastest World Cup athletes. New, super-compact shape - maximum tyre clearance even with small 29er frames. Adapted anti-slip elements on the surface (Comp & Pro Titanium). 360° padding for maximum protection and optimized leg steering control. Well-padded seat for lift use. Contour follows the motion sequence required of downhill – for a smooth descent.Saddle Shell: Nylon Composite,Rail: CroMo Oil Slick Colourway,Cover: Microfiber with Anti-Slip-Cover,Padding: 360° Edge Padding,Size (LxB): 236 x 120 mm.
The new SMC offers even more seating comfort than the best-selling SMC4 and is a true problem solver. The new SMC will replace the world proven SMC4 for both Women and Men. MTB and gender optimized contact areas for the sit bones, combined with freedom of movement, make this a saddle ready to take on the world.Key Features: Shell: Nylon Composite, Rails: CroMo, Cover: Microfibre, Padding: Orthopaedic Comfort Foam with Gel Pads, Weight: 300g (S/M), 335g (M/L).
This SMC model replaces the world-proven SMC4 and offers gender optimised contact areas for the sit bones, combined with freedom of movement. It features a microfibre cover construction, which is perfect at handling multiple changes to your riding position as you navigate across the mountain bike trails. Ergon has also equipped this model with CrMo rails, so you can benefit from its strong and reliable hold to your seatpost on the most challenging of rides. One final highlight is its orthopaedic comfort foam with gel pads, which relieves pressure and provides long-lasting comfort.
Ergon SM Enduro Comp Men' SaddleDesigned with road cycling in mind, the Enduro Comp Men's Saddle is ready to handle all the challenges that come from long journeys on the tarmac. Made with durable Chromoly (CrMo) rails for a secure hold to your seatpost, this saddle also benefits from orthopaedic AirCell Foam padding, for a comfortable and stable ride, no matter how bumpy the road gets. Features:Use: RoadShell: Nylon CompositeRail Material: CrMoCover: MicrofibreSide Flanks: YesEdge Protection: YesPadding: Orthopaedic AirCell FoamWeight: 245g (S/M), 250g (M/L)Buy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Ergon SMC Men's Sport Gel Mountain Bike SaddleReplacing Ergon’s hugely popular SC4 model, the SMC Men's Sport Gel Mountain Bike (MTB) Saddle offers gender optimised contact areas for the male sit bones, combined with excellent freedom of movement. It features a microfibre cover construction, which is perfect for handling multiple changes to your riding position as you navigate across the MTB trails. Ergon has also equipped this model with Chromoly (CrMo) rails, so you can benefit from its strong and reliable hold to your seatpost on the most challenging rides. One final highlight is its orthopaedic comfort foam with gel pads, which combine to relieve pressure and provide long-lasting comfort.Features:Cover: Microfibre Padding: Orthopaedic AirCell Foam with Gel Pads Shell: Nylon Composite Rails: Chromoly (CrMo), 7x7mm Use: MTB, Touring Dimensions (LxW): S/M: 273x149mm; M/L: 276x164mm Recommended Sit Bone Widths: S/M: 9-12cm (3.5" - 4.7"); M/L: 12-16cm (4.7" - 6.3") Male or Female: Male Relief zone, specifically designed for the male anatomy Wide gel pads reduce seat pressure Slightly raised rear end with V-shape for high freedom of movement Weight: 300g (S/M), 335g (M/L)Buy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Ergon SM Enduro Comp Men' SaddleDesigned with road cycling in mind, the Enduro Comp Men's Saddle is ready to handle all the challenges that come from long journeys on the tarmac. Made with durable Chromoly (CrMo) rails for a secure hold to your seatpost, this saddle also benefits from orthopaedic AirCell Foam padding, for a comfortable and stable ride, no matter how bumpy the road gets. Features:Use: RoadShell: Nylon CompositeRail Material: CrMoCover: MicrofibreSide Flanks: YesEdge Protection: YesPadding: Orthopaedic AirCell FoamWeight: 245g (S/M), 250g (M/L)Buy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The ergonomic saddle revolution for touring bikes. The floating TwinShell with ergonomic core supports the natural pelvic movements while pedaling, actively relieves the sit bones, and reliably dampens vibrations caused by the riding surface. The core consists of the latest E-TPU materials, bringing state of the art technology in responsiveness and damping. The saddle shape has been anatomically perfected specifically for men and women. Thanks to the significant relief channel, numbness and pain are effectively prevented. The new ST Core saddle is tailored in detail to the needs and requirements of touring and e-bike riders around the world.Upper Saddle Shell: The flexible upper shell connects the ergonomic core with the seat padding and allows the flexibility of the ST Core.Ergonomic Core: The core supports the natural movement of the hips and dampens the effect of constant bumps.Lower Saddle Shell: The lower stiff saddle shell holds the base and guides the absorbed vibrations into the ergonomic core.Pronounced Relief Channel: The Relief channel helps to avoid numbness and provides increased protection for soft-tissue areas.Anatomical Shape: The wide, comfortable seat area is matched to an upright or slightly inclined seating position – the typical posture of a touring rider.Movement & Relief: The ergonomic core ensures all pelvic movements are supported and pressure on the seat bones is actively relieved with every rotation of the pedal.Key Features:Shell: Nylon GFRP,Core: Closed Cell Particle Foam (E-TPU),Rails: CroMo,Cover: Microfibre,Padding: Orthopaedic Comfort Foam.Size:Small/Medium: 9-12cm Sit bone width,Medium/Large: 12-16cm Sit bone width.
Ergon SM Enduro Comp Men' SaddleDesigned with road cycling in mind, the Enduro Comp Men's Saddle is ready to handle all the challenges that come from long journeys on the tarmac. Made with durable Chromoly (CrMo) rails for a secure hold to your seatpost, this saddle also benefits from orthopaedic AirCell Foam padding, for a comfortable and stable ride, no matter how bumpy the road gets. Features:Use: RoadShell: Nylon CompositeRail Material: CrMoCover: MicrofibreSide Flanks: YesEdge Protection: YesPadding: Orthopaedic AirCell FoamWeight: 245g (S/M), 250g (M/L)Buy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Ergon SM E-MTB Sport SaddleOffering excellent comfort and support in steeper terrain conditions, this sporty men's electric mountain bike (E-MTB) saddle significantly improves your seated position while climbing. With its microfibre cover, nylon composite shell and chromoly steel rails holding you securely to your seatpost, this E-MTB model offers the best combination of strength, flexibility and control during your off-road adventures. Another highlight is its rising ramp section at the rear, which offers a stable, effort-saving hold when climbing uphill. Its nose has also been developed to be wider and more comfortable, as your positioning often shifts forward in extremely steep sections.Features: Cover Material: Microfibre Shell Material: Nylon Composite Rails Material: Chromoly Steel (CroMo) Padding: Orthopaedic Comfort Foam with OrthoCell Inlays Use: Electric Mountain Bike (E-MTB) Gender: Male Dimensions: Small/Medium Option; 278x145mm; Medium/Large Option: 278x157mm Weight: Small/Medium Option; 335g; Medium/Large Option: 350gTechnologies: Deep Relief Channel: The progressive relief channel, which deepens towards the rear, leads to an opening through the saddle shell. This construction combines all of the advantages of a cut-out saddle without the potential disadvantages. This design gives the saddle shell more forgiveness as well as specifically relieves perineal pressures. Too much pressure in this area often leads to discomfort and numbness in the genital area. OrthoCell Pads: The OrthoCell material helps you to achieve your best performance without any complaints. These inlays, which are more durable and lighter than gel, ensure the best pressure distribution and provide the highest rebound force. This means they follow the movements of the pelvis with every turn of the crank but return to their starting position very quickly. Orthopaedic Foam: The orthopaedic foam is especially ergonomic for mountain biking, but still extremely durable. With the addition of OrthoCell inlays, the pressure of the bony structures is distributed much better by increasing the rebound force and dissipating vibrations. Anti-Friction Side Flanks: For an additional benefit of comfort, Ergon have added anti-friction side flanks to the SM-E Mountain saddle. This feature reduces the friction of your thighs on the saddle while pedalling resulting in less friction and more freedom of movement. Removable Topeak QuickClick Saddle Bag Mount: A Topeak QuickClick mount is integrated into all models of the SM-E Mountain series. This removable QuickClick mount allows for Topeak saddlebags to be easily attached in a streamline fashion.Manufacturer's Part Numbers: EG-44011016 Black M Medium/Large EG-44011015 Black S Small/MediumBuy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The new Ergon SM Men saddles are specifically tailored to the features of the male anatomy and optimized for the requirements of mountain biking. With the assistance of the latest scientific studies and intensive prototyping Ergon‘s interdisciplinary development team – consisting of sports scientists, industrial designers, engineers and test riders – have come up with a new generation of pressure-relief men’s saddles. The SM Men saddles effectively avoid discomfort and numbness for most applications in mountain biking – for most types of mountain bike riders.Relief Inlays: Increased comfort due to OrthoCell®-Inlays in the seating area, which help distribute pressure better.Large-Area Pressure Distribution: Perfect pressure distribution in the area of the sit and pubic bones by means of a flat, even contact area and high-end padding foams.Flat Rear: The narrow, slightly inclining rear with a flat contour and a minimal ramp-up give great freedom of movement on the downhills.Flat contour: Due to the more upright pelvic orientation the saddle surface is flat with great freedom of movement.Effective Relief: The extremely deep and rearward increasing relief channel is complemented by a proper cut-out in the deepest spot. This construction combines all the benefits of a standard cut-out saddle without its drawbacks (often a very stiff shell) producing a particularly high degree of pressure relief of the sensitive perineal area. Exceedingly high pressures often are the cause for discomfort and numbness in the genital area.Shape: Through its Y-Shape the freedom of movement and legroom are maximized, while at the same time all bone structures are ideally supported.Integrated Mount: Convenient removable mount for accessories like Topeak® saddlebags.Key Features:Shell: Nylon Composite,Rails: TiNox,Cover: Microfibre,Padding: Orthopaedic Comfort Foam with OrthoCell Pads,Weight: 270g (S/M), 280g (M/L),.Size:Small/Medium: 9-12cm Sit bone width,Medium/Large: 12-16cm Sit bone width.
The Ergon design team has analyzed the requirements of E-Mountain bikers in detail. Longer periods of sitting, steeper uphills and greater levels of impact characterise the E-MTB experience. After intense development, the optimal saddle shape was found. The rear ramp better supports the rider in steep uphill riding situations when seated. The V-shape offers freedom of movement across the wide flanks up to the padded nose – important for particularly steep climbs.Supporting Ramp: Strongly raised ramping for maximum support from behind – helps stabilizing your position on the bike and saves energy when riding uphill.Soft Comfort Padding: Maximum comfort when seated due to thicker padding – even on long rides.Pronounced Relief Channel/Cut-Out: The Relief channel helps to avoid numbness and provides increased protection for soft-tissue areas. Specially adapted for men and women.Pressure Relief Inlays: More comfort thanks to the OrthoCell®-Inlays in the seating area, which helps distribute pressure better.Wide Front: In particularly steep trail sections, the position often is shifted towards the front. That’s why the E-Mountain’s saddle nose is deliberately designed wide and comfortable.Key Features:Shell: Nylon Composite,Rails: CroMo,Cover: Microfibre,Padding: Orthopaedic Comfort Foam with OrthoCell Inlays,Weight: 300g (S/M), 315g (M/L),.Size:Small/Medium: 9-12cm Sit bone width,Medium/Large: 12-16cm Sit bone width.
Ergon SMD2 Comp Bike SaddleDesigned, tailored and perfected by Ergon as a result of an intensive development period with the help of some of the world's best downhill racers, the SMD2 Comp model provides the ultimate saddle feel. It's advantageous for riders who seek additional control when riding on the most challenging terrain at speed, making it perfect for racing.Ergonomically ShapedThe entire saddle and its profiled design follows an ergonomically shaped, tilted saddle orientation that offers the rider complete freedom of movement over and around the bike. Being able to control the bike with the inner leg is very important when riding at speeds over rough terrain and the padding around this saddles key contact areas is the marvel of its design.Clearance at the RearClearance at the rear of the saddle allows for undisrupted tyre clearance and suspension travel. This clearance is also a convenience to the rider when negotiating steep technical descents as it will not restrict movement when adjusting your centre of gravity over and around the rear wheel.Additional Stiffness and GripThe carbon composite shell and the anti-slip seating surface add additional stiffness and grip to the saddle making it ideal for riders who demand the most from their components. The added level of grip and stiffness boosts control, performance and rider confidence when riding through the roughest of terrain.Features: Cover Material: Microfibre, Anti-slip (outer), Carbon composite (shell) Padding: 360° Edge paddingRails' Material: Chromoly (CrMo), 7x7mmUse: Downhill (DH), Freeride (FR)Made for DownhillDeveloped with world-class professionalsDurable and slip-resistantExtra-flat, short rear without edges for better rear tyre clearanceWeight: 215gTechnologies: Downhill Saddle Positioning: The saddle is set very low and with the nose slightly upwards for the downhill riding position. This allows for more freedom of movement and control in technical terrain; especially noticeable when hitting jumps The SMD2 is not suitable for level saddle settingsOne Size Fits All: The saddle is rarely used for sitting in downhill. This saddle however serves in the handling of the bike for seated pedalling, as well as in the air. The SMD2 was developed precisely to meet these needs, which directly results in no need for different saddle widthsBuy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Ergon SM E-Mountain Core Prime Women's SaddleReady for hitting the trails, this high-quality women's saddle comes equipped with some of the finest Ergon technologies available to deliver a superior off-road riding experience. Allowing riders to remain seated when climbing, its rear ramp section enhances your pedalling power for greater stability and control. Its orthopaedic comfort foam also ensures that you stay comfortable by providing day-long support on your electric mountain bike (E-MTB) adventures. Ready for whatever the mountain terrain has to offer, this saddle's durable microfibre cover, flexible nylon composite shell and rock-solid chromoly steel rails have you covered.Floating Ergonomic Saddle CoreWhen pedalling, your weight is continuously shifted from one sit bone to the other - with the highest stress on the pedal-up side, where your body weight is focused and high pressure occurs. This localised pressure is noticeably reduced by the Ergon Core: Through the suspended Core design and the high-end material properties, the bike saddle has the ability to adapt to every pelvic motion when pedalling - enormously enhancing comfort.Features: Cover Material: Microfibre Shell Material: Nylon Composite Rails Material: Chromoly Steel (CroMo) Padding: Orthopaedic Comfort Foam Use: Electric Mountain Bike (E-MTB) Gender: Female Dimensions: Small/Medium: 278x147mm; Medium/Large: 278x160mmTechnologies: Energy-Saving Ramp: The SM E-Mountain Core Prime Women significantly improves your seated position while climbing. The steeply rising ramp at the rear gives you a stable, effort-saving hold when climbing uphill. Ergon has also designed the saddle nose to be particularly wide and comfortable, as the seat position often shifts forward in extremely steep sections. Innovative Infinergy Material: BASF's innovative Infinergy material sets new standards for suspension and damping on bicycles. The elastic saddle core supports pelvic movements when pedalling, absorbs road shocks, and is easy on the back. When the pedalling pressure decreases, the Ergon Core, consisting of thousands of foam particles, immediately rebounds back to its original shape. Leading manufacturers of running shoes also use this E-TPU foam worldwide with great success. Double Shell: The revolutionary Ergon double-shell technology takes comfort to a whole new level. With the conventional saddle, there is only one seat shell on the frame. This standard shell supports all of the rider's weight and must therefore be very stiff. The SM E-Mountain Core Prime Women utilizes two shells. The lower shell, supporting the rider's weight is very stiff and the upper shell, which is a base of the padding material is very flexible. In between is the floating ergonomic core made of Infinergy. This design isolates road shock, dampens vibrations, supports pelvic movements while pedalling, and noticeably takes the pressure off the sit bones. Inner Core Damper: The view from below on the SM E-Mountain Core Prime Women shows how the high-performance elastomer damper decouples the two saddle shells from each other. This sandwich construction with its elastic core allows the saddle to follow the natural movements of the pedal stroke. This provides support in all directions from the vibrations of the riding surface to the rider's pedal stroke. Orthopaedic Foam: he padding of the ST Gel is made of orthopedic comfort foam, which we have designed for fitness bikes, e-bikes, and touring bikes. The foam is supportive, soft, but does not collapse. In addition to the foam, specific gel pad inlays offer even more comfort under the sitting area. With this saddle, it is not absolutely necessary to wear cycling shorts. The saddle is covered with robust microfiber to prevent abrasions and maintain the durability of the saddle.Manufacturer's Part Numbers: EG-44011050 Black S Small/Medium EG-44011051 Black L Medium/LargeBuy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Ergon SM E-Mountain Core Prime Women's SaddleReady for hitting the trails, this high-quality women's saddle comes equipped with some of the finest Ergon technologies available to deliver a superior off-road riding experience. Allowing riders to remain seated when climbing, its rear ramp section enhances your pedalling power for greater stability and control. Its orthopaedic comfort foam also ensures that you stay comfortable by providing day-long support on your electric mountain bike (E-MTB) adventures. Ready for whatever the mountain terrain has to offer, this saddle's durable microfibre cover, flexible nylon composite shell and rock-solid chromoly steel rails have you covered.Floating Ergonomic Saddle CoreWhen pedalling, your weight is continuously shifted from one sit bone to the other - with the highest stress on the pedal-up side, where your body weight is focused and high pressure occurs. This localised pressure is noticeably reduced by the Ergon Core: Through the suspended Core design and the high-end material properties, the bike saddle has the ability to adapt to every pelvic motion when pedalling - enormously enhancing comfort.Features: Cover Material: Microfibre Shell Material: Nylon Composite Rails Material: Chromoly Steel (CroMo) Padding: Orthopaedic Comfort Foam Use: Electric Mountain Bike (E-MTB) Gender: Female Dimensions: Small/Medium: 278x147mm; Medium/Large: 278x160mmTechnologies: Energy-Saving Ramp: The SM E-Mountain Core Prime Women significantly improves your seated position while climbing. The steeply rising ramp at the rear gives you a stable, effort-saving hold when climbing uphill. Ergon has also designed the saddle nose to be particularly wide and comfortable, as the seat position often shifts forward in extremely steep sections. Innovative Infinergy Material: BASF's innovative Infinergy material sets new standards for suspension and damping on bicycles. The elastic saddle core supports pelvic movements when pedalling, absorbs road shocks, and is easy on the back. When the pedalling pressure decreases, the Ergon Core, consisting of thousands of foam particles, immediately rebounds back to its original shape. Leading manufacturers of running shoes also use this E-TPU foam worldwide with great success. Double Shell: The revolutionary Ergon double-shell technology takes comfort to a whole new level. With the conventional saddle, there is only one seat shell on the frame. This standard shell supports all of the rider's weight and must therefore be very stiff. The SM E-Mountain Core Prime Women utilizes two shells. The lower shell, supporting the rider's weight is very stiff and the upper shell, which is a base of the padding material is very flexible. In between is the floating ergonomic core made of Infinergy. This design isolates road shock, dampens vibrations, supports pelvic movements while pedalling, and noticeably takes the pressure off the sit bones. Inner Core Damper: The view from below on the SM E-Mountain Core Prime Women shows how the high-performance elastomer damper decouples the two saddle shells from each other. This sandwich construction with its elastic core allows the saddle to follow the natural movements of the pedal stroke. This provides support in all directions from the vibrations of the riding surface to the rider's pedal stroke. Orthopaedic Foam: he padding of the ST Gel is made of orthopedic comfort foam, which we have designed for fitness bikes, e-bikes, and touring bikes. The foam is supportive, soft, but does not collapse. In addition to the foam, specific gel pad inlays offer even more comfort under the sitting area. With this saddle, it is not absolutely necessary to wear cycling shorts. The saddle is covered with robust microfiber to prevent abrasions and maintain the durability of the saddle.Manufacturer's Part Numbers: EG-44011050 Black S Small/Medium EG-44011051 Black L Medium/LargeBuy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Carefully shaped to suit the female anatomy, the SR Sport disperses the rider’s weight equally and removes pressure from sensitive parts and the seating area. This is achieved thanks to the combination of large gel pads, orthopaedic comfort foam and a central cut-out. The addition of a supportive nylon composite shell and CrMo rails ensures optimum power transfer. S/M fits sit-bone width of 9-12cm M/L fits sit-bone width of 12-16cm
Ergon SR Sport Women's Gel Racing Road SaddleErgon's SR Sport Women's Gel Saddle is designed to offer flawless performance for female athletes and avid amateurs alike. Shaped to perfectly suit the female anatomy, it provides lasting pressure relief to the seating area and to sensitive parts. This pressure relief is thanks to a combination of a central cut-out and the addition of large gel pads to the supportive orthopaedic comfort foam.Features: Cover: Microfibre Padding: Orthopaedic comfort foam with gel pads Shell: Nylon Composite Rail: CrMo Use: Road racing Gender:Women specific Dimensions: S/M: 261x141mm; M/L: 261x152mm Weight: S/M: 265g; M/L: 275gBuy Ergon Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
In the average female, the pubic symphysis (front cartilage connecting the two halves of the pelvis) is positioned lower than in a male pelvis, and the angle of the pubic bones towards each other is wider. Furthermore, mobility is higher in women, so when in the saddle, their pelvis often rocks further forwards. This can create high pressure in the genital area. The centre relief, which is positioned far at the front, as well as the wider saddle flanks help distribute the pressure of the sitting area.Pressure Relief Inlays: Inlays in the sit and genital areas distribute sitting pressure. Relief Channel: This recess achieves maximum relief in the genital area to prevent discomfort and numbness in the genital area. Ramp: The ramp supports the buttocks when in a strongly inclined forward position, allowing for improved pressure relief in the genital area. Shape: The V-shape optimally supports the pubic bone and the pressure is transferred to the bony structures. Wide Front: A wide nose allows for a large relief zone without interfering edges. Short Nose: Saddle length is reduced to a minimum in order to improve the freedom of movement on the bike.Key Features:Shell: Nylon Composite,Rails: CroMo,Cover: Microfibre,Padding: Orthopaedic Comfort Foam with Gel Pads,Weight: 265g (S/M), 275g (M/L).Sizes:Small/Medium: 9-12cm Sit bone width,Medium/Large: 12-16cm Sit bone width.