Material: made of nylon, knitted fabric & eva foam, comfortable and durable function: sunscreen! 99% protection from harmful uv rays, cooler than outside temperature, isolation of ultraviolet rays, protect your head and face feature: evaporative cooling liner, just wet with water, adjustable design suitable for: outdoor activities, perfect for hiking, fishing and camping! especially wear it to jungle, garden, yard, pool, beach, and so on. Cooling cap