The women's hat is made of elastic MidZero material, which provides good thermoregulation in cool weather. Internal fleece lining provides superior comfort.Material: 87% Polyester, 13% Spandex
Would not recommend this product for winter running. It is one size, but I do not have a big head and it does not cover my ears when it’s on. Fleece lining inside is very thin. The ponytail hole is too low and too small.