Built for Ultimate Sun Protection, Buff CoolNet UV Multifunctional Headwear is 95% recycled. It is 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 to neck gaiter to hair tie to face mask.