Cooling technology

By using hydrophilic and hydrophobic yarns, this base layer keeps some moisture on the body and allows air to flow freely through the fabric thanks to the special open knit. You get evaporative cooling directly on your skin. Castelli recommends it on the coolest jerseys, like the Climber's or Superleggera, although it will work under any breathable jersey.

Features of the Castelli Active Cooling Sleeveless undershirt:

• Base layer for cooling on hot days
• Polartec® Delta fabric has regulated drying so that the evaporation effect cools your core
• Sleeveless design with minimalist construction
• Sublimated overprint

Material 51% polyester, 45% lyocell, 4% elastane