Many fishermen swear by it because it reduces skin temperature for those long days when exposed to the heat, yet it helps keep you warm on cool days. It has a tubular design which can be used as full head and face mask, bandana, headband, skullcap, neck gaiter and more. The breathable polyester material is lightweight and comfortable, yet it wicks away moisture in the heat and insulates against cold when the weather turns. 100% polyester microfiber all purpose unisex accessory. Product Size : 9-7/9"W x 17-1/4"H. One Size.