BUFF(R) Original EcoStretch Multifunctional Neckwear is engineered with a 4-Way, seamless, ULTRA STRETCH fabric construction that features UPF 50 protection, and 95% recycled REPREVE(R) Performance Microfiber. BUFF(R) Original EcoStretch Multifunctional Neckwear is approved and recommended by The Skin Cancer Foundation. Can be worn more than 12+ different ways, from a cap to a balaclava to a hair tie, for a personalized style and perfect fit.