Perfect for a range of activities including surfing, wakeboarding, kayaking and other water activities, this Osprey Origin Women's summer full length wetsuit features a stylish contemporary black design. 3mm neoprene on the body and 2mm under the arms for full range of motionEntirely flat locked seams and ergonomic panelling for maximum comfortStretch collar and comfortable anti rub openings to prevent chafing and water flushingSupratex patches on knees make it easy to kneel, even on rocky surfacesWind resistant mesh panelling on chest and back offer protection from the elementsA great value beginner and intermediate s wetsuit, this suit includes all the features you need to stay warm whilst remaining flexible. A 3/2mm wetsuit means the Osprey Origin has panels of 3mm thick warm insulating rubber, with 2mm panels under the arms, where you need more flexibility and stretch for paddling and surfing. A 3mm full length wetsuit is the standard thickness for a warm summer wetsuit in the UK and Ireland, which may also be suitable in the winter months for parts of Southern Europe like France and Spain.
The Origin Wetsuit from Osprey is a summer wetsuit that s perfect for surfing, bodyboarding and paddle boarding. Full length design provides increased warmth.The Osprey Origin Black Full Length Wetsuit is Osprey's entry level wetsuit for men. A great value beginner and intermediate wetsuit for when you are past the stage of hiring one from your local surf shop. Despite the very low price point, this wetsuit doesn't compromise on features and style.3mm neoprene on the body and 2mm under the arms for full range of motionEntirely flat locked seams and ergonomic panelling for maximum comfortStretch collar and comfortable anti rub openings to prevent chafing and water flushingSupratex patches on knees make it easy to kneel, even on rocky surfacesWind resistant mesh panelling on chest and back offer protection from the elementsSpecifications include ultra-flex neoprene, chest & back wind shields, anti-rub sealed openings to avoid chafing and water flushing, ergonomic panelling for a superior aesthetic fit, flatlock seams and rubberised knee pads. A 3/2mm wetsuit means the Osprey Origin has panels of 3mm thick warm insulating rubber, with 2mm panels under the arms, where increased flexibility and stretch for paddling and surfing is required.A 3mm full length wetsuit is the standard thickness for a warm summer wetsuit in the UK and Ireland and may be suitable right into winter for parts of Southern Europe like France and Spain. Including an understated black Osprey design, this contemporary looking suit is a go to choice for those new to surfing or intermediates who are continuing to learn their craft.
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm
Keep your eye on the competition with the Rival Goggle, featuring low profile anti-fog lenses for high glare conditions and an adjustable strap for the perfect, comfortable fit.Anatomical fit for comfortLow profile design to reduce dragAnti-fog lens coating for clear visionMirror lens for high glare conditionsPanoramic lenses for wider viewDurable adjustable strap for secure fit
Keep your eye on the competition with the Rival Goggle, featuring low profile anti-fog lenses for high glare conditions and an adjustable strap for the perfect, comfortable fit.Anatomical fit for comfortLow profile design to reduce dragAnti-fog lens coating for clear visionMirror lens for high glare conditionsPanoramic lenses for wider viewDurable adjustable strap for secure fit
Keep your eye on the competition with the Rival Goggle, featuring low profile anti-fog lenses for high glare conditions and an adjustable strap for the perfect, comfortable fit.Anatomical fit for comfortLow profile design to reduce dragAnti-fog lens coating for clear visionMirror lens for high glare conditionsPanoramic lenses for wider viewDurable adjustable strap for secure fit
The snag-free Silicone Swim Cap is designed to hold its shape with no drag, so that you can out-pace the competition.Silicone swim capEngineered from premium grade silicone for up-most strength and durabilityErgonomically designed for unparalleled comfort and securityKeeps head and hair dryIdeal for latex intolerant athletes
The P:2 Propel Wetsuit from 2XU was the winner of Triathlete Magazine Buyer's Guide 'Best In Class", the Propel P:2 Wetsuit is loaded with world-leading technology to provide the progressive swimmer with optimal buoyancy and flexibility to power to the finish line.Full tri wetsuitSCS hydrodynamic coatingFull body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneArm sleeve embossed concave water entrapment zoneFloating zip panelCore Intermediate Stretch Zone (ISZ) panelsRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyNeoprene thickness:Chest - 5mmBack - 3mmArms - 1.5mmUpper legs - 5mmLower legs - 3mmULTIMATE BOUYANCY & FLEXIBILITY - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionREDUCED WATER RESISTANCE - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedENHANCED POWER & EFFICIENCY - Embossed concave water entrapment zone on arm sleeve, enhances power and feel of water whilst the floating zip panel increases movement for improved distance per strokeIMPROVED ROTATION - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleINNER COMFORT & SUPPORT - Our neck panel eliminates seams to improve comfort and reduce chafing whilst the often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption
The P:2 Propel Wetsuit from 2XU was the winner of Triathlete Magazine Buyer's Guide 'Best In Class", the Propel P:2 Wetsuit is loaded with world-leading technology to provide the progressive swimmer with optimal buoyancy and flexibility to power to the finish line.Full tri wetsuitSCS hydrodynamic coatingFull body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneArm sleeve embossed concave water entrapment zoneFloating zip panelCore Intermediate Stretch Zone (ISZ) panelsRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyNeoprene thickness:Chest - 5mmBack - 3mmArms - 1.5mmUpper legs - 5mmLower legs - 3mmULTIMATE BOUYANCY & FLEXIBILITY - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionREDUCED WATER RESISTANCE - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedENHANCED POWER & EFFICIENCY - Embossed concave water entrapment zone on arm sleeve, enhances power and feel of water whilst the floating zip panel increases movement for improved distance per strokeIMPROVED ROTATION - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleINNER COMFORT & SUPPORT - Our neck panel eliminates seams to improve comfort and reduce chafing whilst the often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption
The Propel P:1 Wetsuit from 2XU is an all-round performer equipped with many of the technical features to give aspiring swimmers a winning edge. It features premium Japanese Yamamoto 39 Cell neoprene which is buoyant but still flexible and reduced water resistance with a SCS (Super Composite Skin) hydrodynamic coating which reduce surface drag for more speed.Full tri wetsuitSCS hydrodynamic coatingFront body premium Japanese Yamamoto 39 Cell buoyant and flexible neopreneBack panel premium Japanese Yamamoto 39 Cell nylon laminated durable neopreneFloating zip panelRollbar technologyLower leg propulsion panelQuick release ankle Transition Panel520% internal stretch liningTwo-year warrantyBuoyant & Flexible - Premium Japanese Yamamoto 39 Cell neoprene is buoyant but still flexible and varies in thickness throughout the body of the wetsuit, moving your centre of buoyancy lower, preventing sinky legs and putting you in perfect horizontal swimming positionReduced Water Resistance - Super Composite Skin (SCS) hydrodynamic coating reduces surface drag for more speedEnhanced Efficiency - Floating zip panel increases movement for improved distance per strokeImproved Rotation - Rollbar technology ensures less buoyancy on perimeter of wetsuit, allowing snappier side-to-side rotation and eliminating dead spots in your freestyleInner Comfort & Support - Often-overlooked internal liner is engineered for 520% stretch to ensure comfort and low absorption.Neoprene thickness:Chest - 5mm Back - 3mmArms - 2mmUpper legs - 5mmLower legs - 4mm