This hat is made of supple, quick-drying fabric with a water-repellent finish on the surface. The front of the hat is shallow to ensure good visibility, while the back is deeper to prevent it from being blown away by the wind. The brim can be flipped up on the sides and secured with a hook. Comes with a chin strap. Specifications 【Material】70-denier full dull spun-like nylon tasser [water-repellent finish] 【Average Weight】63g 【Colors】Yellow (YL), Dark Gray (GM), Dark Green (KHGN), Tan (LTN) 【Sizes】S, M, L, XL 【Brim Length】6.4cm This is a size M in Dark Gray.