High quality material: 100 %polyester fiber, breathable fabric, made of high quality quickly dry polyester fibers, light and breathable. Metal permeable pores on both sides of the hat support greatly support air circulation; It always keeps you cool and comfortable. . Patratikism and versatility: The hatch of the hat is large enough to close the forehead. The interior of the hat is a breathable net layer that can greatly increase coolness, comfort and air flow. The buttons on both sides of the hat can give you different styles. UPF 50+: This solar hat contains an internal UPF 50 protection, an ultra -sweat absorbent headband and the net ventilation panel for hot outdoor days. SUITABLE PEOPLE: Environment: 58-63 cm (22.8-24.8 inches), the shield length: 8 cm (3.15 inches), hat height: 10 cm (3.94 inches). The ly adjustable jaw belt provides a comfortable fit and effectively prevents the UV protection cover from flying away from the wind. Extensively applicable situations: sunshades, daily clothing, sports and fishing, walking, outdoor work, garden trips, camping, beaches, etc.