Nike Dri-FIT Pro Cap Black FB5380 010 This Nike cap is perfect for everyday wear and active wear. The stiffened construction maintains its shape and provides a stable fit. Dri-FIT technology wicks away moisture to help keep you dry and comfortable. An adjustable snap closure allows for an easy fit, and the flat brim emphasizes a sporty look. Specifications: Body: 100% polyester. Front lining: 100% polyester. Lower brim: 100% cotton. Size / Head circumference: S/M (52-57 cm), M/L (55-60 cm), L/XL (58-63 cm)