QING OUTDOOR UPF 50+ Quick Dry Coolmax Uv Half Headwear for Adult (black bat) Material: 100% Soft, breathable Coolmax Extreme Moisture-wicking fabric. UPF 50+,Blocks 95% of UV rays, Polygiene Active Odor Control.Thermal protection from cold & wind CoolMax fabric was originally developed for clothing intended for use during extreme physical exertion  sweat can evaporate quickly so the wearer is kept dry. Coolmax is a brand name for a series of moisture-wicking technical fabrics,The fabrics employ specially-engineered polyester fibres to improve "breathability", draw moisture away from the skin through capillary action and increased evaporation over a wider surface area. GUARANTEED SATISFACTION: 60 days 100% money back satisfaction guarantee.