Even when it's hot, you need an undershirt to keep your body dry and cool, and this Castelli Active Cooling SL will meet all your expectations. Made with Polartec Delta fabric and hydrophilic and hydrophobic yarns, this base layer wicks moisture away from the body while ensuring free air circulation. All this to keep you cool on hot days and comfortable on long rides.

Technical specifications:

- Colour: Silver Grey
- Sizes: XS, S, M, L, XL, XXL
- Weight: 140 g
- Temperature: 25 - 35 degrees
- Polartec Delta fabric
- Hydrophilic and hydrophobic yarns - Sleeveless design with minimalist construction - Sublimated overprint Castelli size guide