Women's Adidas cold weather backless hat, color is black. The open back accommodates your ponytail. 100% polyester. A BACKLESS HAT MADE OF COZY FLEECE. Let your flowing locks fly free while you work out in this adidas backless cap. It's made of warm, comfy fleece, with a cutout in back so you don't have to worry about hat head or an awkward fit. Elastic in back keeps the hat firmly in place.