Castelli Insider Jersey

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The Castelli Insider Jersey is primarily designed for use in your pain cave, though it's suitable for hot weather outdoor wear too. Made from a light 3D Mesh that's a blend of polyester and a touch of elastane, it's knitted widely enough to let air circulate, though narrowly enough to preserve the jersey's opacity, so that you can ride or work out in a group without embarrassment.

With no natural winds to lower your temperature, training indoors can get warm, which can affect your performance. The stretch of the elastane ensures this jersey offers a comfortable but close, flattering fit, while the polyester encourages sweat to move out and cool you more quickly — allowing you to exercise harder and for longer.

The jersey also benefits from the inclusion of a HEIQ Fresh Tech silver-free odour control treatment. You'll find that, even when you're pushing your limits and feeling sticky, you will never smell less than fresh.

Meanwhile, a full zip will allow you to ventilate or remove your jersey at any time, while a low collar and short waist will allow heat to escape. Two pockets at the back further increase the jersey's utility by allowing you to stow gels, ear buds, a headband or anything else you want to hand as you train.

All these amazing features make the Castelli Insider a practical jersey, one that will keep you cool and comfortable when you're working hard, whether that's in a cybersport session or while exploring the Lake District. Either way, you'll look and feel great wearing it.

Key features:

  • Constructed from semi-open 3D Mesh, made from 93% polyester and 7% elastane
  • This ensures a close fit and promotes wicking
  • With HEIQ Fresh Tech silver-free odour control treatment
  • Full-length zipper for easy removal or mid-route ventilation
  • 2 rear pockets for storage
  • The perfect balance between airiness and opacity
  • For outdoor use as well as indoor training
  • Weighs 86g (medium size)
  • For use at temperatures from 20-40?C, 68-104?F

Colours Dark Red, Savile Blue
Sizes 2XL, 3XL, L, M, S, XL, XS
Brand Castelli
Model Year 2023
Barcodes 8050949693650, 8050949732076, 8050949732083, 8050949732090, 8050949732106, 8050949732113, 8050949732120, 8050949732137, 8050949732144, 8050949732151, 8050949732168, 8050949732175, 8050949732182, 8050949732199
SKUs / Part Numbers CS225244141, CS225244142, CS225244143, CS225244144, CS225244145, CS225244146, CS225244147, CS225246111, CS225246112, CS225246113, CS225246114, CS225246115, CS225246116, CS225246117

Please note: Manufacturers can sometimes change the specification of the products from time to time.