Stay cool on the hottest days with this lightweight Distance Running Hat. Designed with SPDWick moisture-managing fabrics that are ultra-breathable and quick-drying. It features large side mesh panels for maximum ventilation at the hottest parts of your head to keep you comfortable during long runs. The flexible brim is easily packable and allows you to customize your style—curve it, flip it up, or leave it flat. This hat is unisex and can be worn by men or women. Five panels, 100% polyester with UPF+40 protection on the solid panels. The size is large. It fits 54 cm to 61 cm. The weight is 2.1 oz.