Solid Black Headwrap Motorcycle Biker Bicycle Doo Rag Bandana Hat Skull Cap 100% Cotton Solid black color. 100% Cotton. Purchase includes a Bumper Sticker by Buy Caps and Hats. Lightweight enough to fit under many motorcycle and football helmets to help prevent or soothe shafting caused by rubbing. Neck flap and ties to fit may heads. Runs a little small and may not fit larger heads. Great for sun and wind protection for chemo patients and naturally bald heads. Keep dust, paint and other debris out of hair. Absorbs some sweat. Keep hair in place and can act as a more stylish hair net.