Castelli Active Cooling Sleeveless

The Castelli Active Cooling Sleeveless base layer keeps you cool and dry during hot summer months. Next-to-skin fabrics that focus just on wicking sweat won’t cool your body. When you overheat in these fabrics, you cannot maximize your effort and reach your potential as an athlete. The Active Cooling Sleeveless Base Layer not only keeps you dry, but the Polartec® Delta fabric cools you down. The Delta fabric with elevated touch points creates space between skin and base layer so circulating air cools you down as your body temperatures rises. The Delta fabric is multi-layered. The first layer closest to skin pulls away sweat and the outer layer evaporates it. The construction of the base layer is complex, yet it is very lightweight creating a performance base layer that will ensure you feel great as you are making those all-out-efforts on the bike.