The Original Buff is a multifunctional tubular microfiber accessory that can be used for many different activities in both cold weather as well as hot weather. Buff's unique product will keep you warm while it is cold out, while wicking moisture and keeping you cool when it is hot out. Buff's lightweight, breathable and moisture wicking material not only is wind resistant, but is extremely comfortable to wear. The more you wear it, the softer your Buff will get. Material: 100% Polyester.