adidas Run ClimaCool 3-Stripes Running Cap Ventilated CLIMACOOL - This technology keeps you dry and comfortbale. Medium pre-curved brim - It's pre-curved so you don't have to bend it yourself. Backstrap - It has a backstrap with clip for adjustability giving individual fit. Lightweight and Breathable - Good breathable sweatband keeps you comfortable during and af UV protection - Protect your head, face and eyes from exposing to sunlight