Trendy Apparel Shop High Quality Breathable Cotton Headwrap Skull Cap Doo Rag. 100% Cotton. Stylish designed preshrunk breathable cotton headwraps great for biking, cycling, jogging, exercising and for every day use. Shields your head from wind and sun, can be worn under helmet. Features 2 back ties and center tail to adjust to your preferred size/fit on your head. Durable, breathable, lightweight and flexible material. One size fits most heads.