4F FNK Cap 4FWAW25AFCAU117 Properties: 4F cap The 4F functional hat is perfect for outdoor training. Polyamide will comfortably wrap your head without any pressure effect. The material wicks moisture away, ensuring comfort. Reflective elements. Flat seams. Single layer. Technical data: Material: 80% polyamide, 20% elastane Size/head circumference: S/M (52-57 cm), L/XL (57-61 cm)