Made of 92% Polyester/8% Spandex Interlock with Coolcore technology that wicks moisture away and dries quickly. Coolcore technology offers a natural cooling effect with up to 30% reduction in body surface temperature while also providing up to 50+ UPF protection. 4-way stretch fabric is light weight, smooth, and durable. This high quality neck buff is extremely versatile and can be worn 12 different ways (neck gaiter, scarf, hairband, face mask, balaclava, skull cap, sun guard, hood, do rag, pirate, headband and hair tie). Protects your nose, mouth, ears, and neck from environmental elements such as wind, dirt, dust, sun, and insects. Perfect for outdoor sports, biking, hiking, yardwork, parties, festivals, and other outdoor activities. Dimensions are 20.5 inches long by 9.5 inches wide (One size fits most adults).