Built for Ultimate Sun Protection - Buff CoolNet UV+ Multifunctional Headwear is 95% recycled - engineered with REPREVE performance microfiber HeiQ cooling technology Polygiene odor control and has a 4-Way seamless ULTRA STRETCH fabric construction that features UPF 50+ sun protection. Buff CoolNet UV+ Multifunctional Headwear is approved and recommended by The Skin Cancer Foundation. Can be worn 12 different ways - from cap to balaclava neck gaiter to hair tie - for optimal performance and protection personalized style and a perfect fit.