The TACOMABEAST Skull Sport Bottle is made from double-wall stainless steel. Designed to keep beverages hot or cold for hours. Bottle features a vacuum-insulated interior for temperature retention. Includes a screw-on lid with a flip-top spout cover, a drinking spout and a locking mechanism. Bottle is designed with a powder-coated finish and a carrying strap. Capable of fitting into most cup holders. Can hold 21 oz of your favorite drink.