100% Polyester BREATHABLE POLYESTERMade of 100% breathable mesh polyester that thin and lightweight without feeling smothered. Provide premium performance for breathability, absorbency, wicking, and durability and abrasion resistance. UPF 50+UPF 50+ to protect you from harmful UV and guards you against wind and dust. With high-quality materials, it must protect your skin from being over exposed to the harmful of the sun. MULTI-FUNCTIONAL DESIGNUnisex men women headband, cap, beanie, neck gaiter, wind or dust screen, balaclava, pirate-style cap, scarf or a helmet liner, a yoga session, fashion and more. ONE SIZE FITS MOST19.7inch X 9.8inch; High stretchable mask for head circumference is about 21.25inch-25inch. Great fits for heads of all shapes and sizes /men women boy. BEST GIFTBest gift for your parents, friends, and yourself in outdoor activities. We provide 100% money back guarantee. We will give you a full refund or ship a new replacement if not satisfied with this purchase. Product Specification: Size: 19.7 inch *9.8 inch Material: 100% polyester Feature: - Made of Polyester microfiber, which can absorb sweat and dry quickly - UPF 50 to protect you from harmful UV and guards you against wind and dust - Highly stretchable circumference is about 21.25-25inch with a thickness of 0.5mm -Used as neck gaiter, headwear, face mask, neckwear, headband, beanie, pirate hat and more - Great for dusty festivals, motorcyclists, biking, raves and other outdoor sports Notes: 1. 0-1inch error of measuring is a reasonable range due to different measurement methods. 2. Please allow little color difference due to different camera or light environment.