FC-007 BMIT CAP Shadow Black I'm selling this because the size didn't fit. It's a new item, only tried on. The following is the manufacturer's description: Because there's a mountain there. "If you choose based on design alone, you'll end up not using it. Caps are gear." A trail running cap with amazing lightness (33g) and excellent fit. Incorporating the requests of many runners, the conventional functionality has been updated. Lightweight, flexible, and highly elastic materials are used for each part, providing a comfortable fit even for long hours of wear. The highly breathable mesh covering most of the head and the waterproof yet breathable material maintain comfort even in hot and humid environments. The breathable mesh structure of the crown and sweatband prevents sweat from flowing onto the forehead, even when sweating heavily. The adjustable head circumference belt at the back of the head and the depth adjustment function at the top of the head allow you to set your own comfortable position. You can also insert and store the extra adjustment belt when wearing a light. The short visor, which uses a lightweight and flexible core material, is highly storable and can be rolled up compactly without losing its shape. A new trail running cap that combines high technology and excellent materials. Made in Japan. 【Size】One size fits all (53-61cm) / Brim length: 5.5cm Brim width: 7.5cm 【Material】100% Polyester 【Country of Origin】Japan