JUNK’s Pro Sport Fleece fabric is a breakthrough technology specifically designed to keep you warm while wicking moisture. This is the best athletic ear warmer you'll ever wear! Their ear warmers are made of a moisture management blend of 92% polyester/8% spandex Medium weight, double ply. Design printed on both inside and outside. One size fits most. Odor resistant. Breathable, soft and warm. Wicking finish to help pull sweat away from the skin and quickly dry. Machine washable