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Castelli Insider Jersey Jerseys
  • £41.25
  • RRP £75.00
  • Saving you £45

Indoor training is a brilliant way to get a focused training session done without having to battle traffic, junctions and foul weather. However, standard cycling kit isn't necessarily tailored towards the unique environment and demands of indoor training - that is until now, with the Insider Jersey engineered to take on both heat and sweat. The semi-open mesh fabric is just on the verge of transparency, maximising airflow without affecting modesty, ideal for a group training session for instance. It's also quick to wick away sweat before it pools uncomfortably on the skin and it's quick-drying too for greater comfort as you cool down after your efforts. A full-length zipper makes control of extra ventilation easy and if you do want to strip off after warm-up then it's nice and easy to do so.  Two pockets on the back make stashing a smartphone, or headband or nutrition easy, whatever you need for a good training session. A low collar and short waist mean enhanced airflow too. While it's designed for indoor training don't let that stop you from pulling it on for a scorching hot summer ride outdoors too, it's the ideal jersey for any cycling situation where heat is a major factor.

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Castelli Insider Short Sleeve - XL
  • £44.99
  • RRP £70.00
  • Saving you £36

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider Short Sleeve - L
  • £44.99
  • RRP £70.00
  • Saving you £36

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider Short Sleeve - M
  • £48.99
  • RRP £70.00
  • Saving you £30

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider Short Sleeve - S
  • £44.99
  • RRP £70.00
  • Saving you £36

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider Jersey - XL
  • £57.99
  • RRP £90.00
  • Saving you £36

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider Jersey - M
  • £57.99
  • RRP £90.00
  • Saving you £36

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider Jersey - S
  • £57.99
  • RRP £90.00
  • Saving you £36

The lightest jersey we've ever made is ideal for your cybersport suffer sessions. 3D Mesh lightweight 93% polyester / 7% elastane wicks moisture and dries quickly HEIQ Fresh Tech silver free odor control treatment Semi open mesh allows maximum air flow without becoming too transparent Full length zip makes for easy on and off 2 rear pockets for stashing whatever you need Can be used as hot weather outdoor jersey. INDOOR TRAINING NEVER LOOKED THIS GOOD We made this jersey for the rigors of indoor training. The 3D Mesh fabric allows maximum airflow for cooling while wicking away moisture to keep you dry. We made it on the limit of not being too transparent in case you want to wear it for group training sessions, or if you're using it at home and want to take it off after warming up the long zipper means it comes off easy.We put a couple of pockets on the back so you can stash your AirPods or phone or headband or whatever you haul to your training station. We've kept the collar low and the waist short for maximum cooling. It just happens to be a great hot weather jersey that you'll pull back out come August.

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Castelli Insider 2 Bibshort - M
  • £85.99
  • RRP £140.00
  • Saving you £39

A lighter and cooler bibshort for more comfortable indoor training. 195 g/m2 main body Lycra® is just enough to hold everything secure without being transparent Mesh side panels allow extra ventilation Raw-cut leg endings engineered to keep leg from riding up Minimalist bib straps with monofilament open knit for breathability Progetto X2 Air Skin care layer pad. If indoor is your main training tool for the winter months, then a dedicated pair of indoor shorts will keep you cooler. The entire construction of this bibshort is focused on making it as cool, light, and airy as possible while still providing the necessary support. The main body fabric is lighter than what our race shorts use, and the side mesh panels help with additional ventilation.We use the skin care layer of our tried and tested Progetto X2 Air Seamless pad because it's sufficiently cushioned for most indoor sessions but much cooler than the full Progetto X2 Air Seamless pad from our cycling shorts. The bib straps are the lightest, most breathable we've ever made.

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Castelli Insider 2 Bibshort - XXL
  • £85.99
  • RRP £140.00
  • Saving you £39

A lighter and cooler bibshort for more comfortable indoor training. 195 g/m2 main body Lycra® is just enough to hold everything secure without being transparent Mesh side panels allow extra ventilation Raw-cut leg endings engineered to keep leg from riding up Minimalist bib straps with monofilament open knit for breathability Progetto X2 Air Skin care layer pad. If indoor is your main training tool for the winter months, then a dedicated pair of indoor shorts will keep you cooler. The entire construction of this bibshort is focused on making it as cool, light, and airy as possible while still providing the necessary support. The main body fabric is lighter than what our race shorts use, and the side mesh panels help with additional ventilation.We use the skin care layer of our tried and tested Progetto X2 Air Seamless pad because it's sufficiently cushioned for most indoor sessions but much cooler than the full Progetto X2 Air Seamless pad from our cycling shorts. The bib straps are the lightest, most breathable we've ever made.

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Castelli Insider 2 Bibshort - XL
  • £90.99
  • RRP £140.00
  • Saving you £35

A lighter and cooler bibshort for more comfortable indoor training. 195 g/m2 main body Lycra® is just enough to hold everything secure without being transparent Mesh side panels allow extra ventilation Raw-cut leg endings engineered to keep leg from riding up Minimalist bib straps with monofilament open knit for breathability Progetto X2 Air Skin care layer pad. If indoor is your main training tool for the winter months, then a dedicated pair of indoor shorts will keep you cooler. The entire construction of this bibshort is focused on making it as cool, light, and airy as possible while still providing the necessary support. The main body fabric is lighter than what our race shorts use, and the side mesh panels help with additional ventilation.We use the skin care layer of our tried and tested Progetto X2 Air Seamless pad because it's sufficiently cushioned for most indoor sessions but much cooler than the full Progetto X2 Air Seamless pad from our cycling shorts. The bib straps are the lightest, most breathable we've ever made.

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Castelli Insider 2 Bibshort - S
  • £85.99
  • RRP £140.00
  • Saving you £39

A lighter and cooler bibshort for more comfortable indoor training. 195 g/m2 main body Lycra® is just enough to hold everything secure without being transparent Mesh side panels allow extra ventilation Raw-cut leg endings engineered to keep leg from riding up Minimalist bib straps with monofilament open knit for breathability Progetto X2 Air Skin care layer pad. If indoor is your main training tool for the winter months, then a dedicated pair of indoor shorts will keep you cooler. The entire construction of this bibshort is focused on making it as cool, light, and airy as possible while still providing the necessary support. The main body fabric is lighter than what our race shorts use, and the side mesh panels help with additional ventilation.We use the skin care layer of our tried and tested Progetto X2 Air Seamless pad because it's sufficiently cushioned for most indoor sessions but much cooler than the full Progetto X2 Air Seamless pad from our cycling shorts. The bib straps are the lightest, most breathable we've ever made.

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