Polartec and indoor biking

Polartec not only outdoor, but also indoor biking

Castelli, Active Cooling Sleeveless Polartec Delta

Castelli Active cooling sleeveless base layer is an excellent choice for the hottest days. Castelli has used Polartec Delta fabric which boasts an innovative composition that regulates drying times and guarantees better breathability when wet. Polartec Delta was created so that technical fabrics could better exploit the body’s natural cooling system – sweat.