Built for Ultimate Sun Protection - BUFF® CoolNet UV® Multifunctional Neckwear is 95% recycled - engineered with REPREVE® performance microfiber, HeiQ cooling technology, Polygiene® odour control and has a 4-Way, seamless, ULTRA STRETCH fabric construction that features UPF 50 sun protection. 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. Product Features and Sizing Recycled CoolNet® fabric: 95% recycled polyester microfiber featuring ultimate moisture management properties, cooling effect, UV UPF 50 protection and ultralight weight. Designed in one piece and without any seams to obtain maximum comfort preventing skin irritation. UPF 50 certified sun protection against ultraviolet (UV) radiation produced by the sun. 95% Recycled Polyester 5% Elastane Size: One Size