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Castelli Insider Jersey


The Castelli Insider Jersey is perfectly primed to keep you cool throughout the rigours of indoor training – unrivalled breathability, moisture management and a slick aesthetic coalesce in this pioneering garment... Read more

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SKU: CS195740852


The Castelli Insider Jersey is perfectly primed to keep you cool throughout the rigours of indoor training – unrivalled breathability, moisture management and a slick aesthetic coalesce in this pioneering garment.

Bred from Castelli’s world-renowned experience crafting jerseys that will keep you cool on the toughest midsummer mountain climbs, the Insider Jersey is a highly technical garment that has been developed explicitly to keep you cool on your indoor training regime.

Without wind against your skin and with higher ambient temperatures indoors it’s crucial to keep your body temperature optimal if you want to perform at your best and get the most out of your indoor training. The Insider Jersey’s entire construction lends itself to unequalled indoor performance potential.

The 3D mesh polyester fabric utilised across the jersey is not only ultra-lightweight when worn but offers you maximal moisture-wicking and quick-dry properties meaning that any excess moisture is lifted from the skin, keeping you cool and comfortable, even on the toughest surges.

The short waist cut, low collar and full-length zipper add to the overall ventilation and mean that the jersey can be effortlessly slipped on and off. The fabric itself is perfectly balanced between transparency and opacity making it suitable for group training sessions or use at home. Two pockets on the rear are great for storage of indoor training essentials such as earphones, headbands or gels.

Because the jersey is the product of a singular drive for maximal breathability and cooling whilst retaining a considered aesthetic, it’s also great when used outdoors in hot weather. You’ll be sure to choose it on midsummer mountain escapes as well as on the turbo trainer.

Key Features
  • 3D mesh polyester fabric for maximal moisture management and quick-drying
  • The perfect balance between transparency and opacity for optimal airflow and a clean-cut look
  • Full-length zipper for ease of wearing and taking off
  • Two rear pockets for storage of essentials
  • Great hot weather outdoor jersey as well as for indoor training

ABOUT Castelli

Castelli Cycling is the most innovative, stylish and prestigious cycling clothier in the world. Decades of pro cycling development and a passion for perfection in materials, cut and performance has seen the brand reinvent cycle wear time after time. From the first Lycra shorts to sublimated printing, the game-changing Gabba and aerodynamic apparel, Castelli continues to set a path that others can only follow while maintaining generations of Italian heritage. Read more about Castelli.


Founded by real cycling enthusiasts in 2004, our passion for elite performance runs through everything we do at Saddleback. Our team of dedicated roadies, mountain bikers and triathletes practice what we preach to bring you the finest cycling products and a superior service to match. We're the official UK home of Castelli, Chris King, ENVE, HJC, Moots Cycles, PUSH, Sidi, Silca, Sportful, Stages, Troy Lee Designs and Wolf Tooth.


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