adidas ClimaCool Running Cap Imported Ventilated CLIMACOOL - This technology keeps you dry and comfortbale. COOLMAX Material - Moisture-wicking yarn for excellent resistant against water/ CLIMALITE Fabric - Aids the movement of sweat away from your skin and keeping you drier and comfier. UV protection - Protect your head, face and eyes from exposing to sunlight Buckle Adjustable Backstrap - It has a backstrap with clip for adjustability giving individual fit.