Built for Ultimate Sun Protection - BUFF CoolNet UV+Â®Â Multifunctional HeadwearÂ is 95% recycled - engineered with REPREVEÂ®Â performance microfiber, HeiQ cooling technology, PolygieneÂ®Â odor control and has a 4-Way, seamless, ULTRA STRETCH fabric construction that features UPF 50+ sun protection. BUFF CoolNet UV+Â®Â 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. 95% recycled REPREVEÂ® performance microfiber. Recommended by The Skin Cancer Foundation.