The technical material offers protection from wind and sunshine, and transfers moisture well - the perfect package for high intensity sports. The cap is very supple in terms of structure, and can be packed to a backpack or a piece of luggage. - Flexible peak - Adjustment buckle at the rear - UPF 50+ - The fabric has an odour resisting HeiQ Fresh FFL treatment which is free of silver and is not based on antimicrobial characteristics - Sizes: - S/M = 56cm - L/XL = 58cm The odour resistant treatment is based on an amino sugar polymere that removes the fat and protein from sweat, making it impossible for bacteria to use it as sustenance.