BlenderBottle® Marvel Shaker Bottle - Captain America Authentic BlenderBottleShaker cup: officially licensed Marvel themes. 28-ounce capacity (Note: measurements only go to 20 ounces) Sleek and durable shaker cup for mixing protein shakes, smoothies, and supplements Patented mixing system uses 316 surgical-grade stainless steel BlenderBall wire whisk found only in BlenderBottle brand shaker cups Screw-on lid creates leak-proof seal, and secure flip cap with SpoutGuard keeps germs at bay; wide loop top for easy carrying or attaching keys Made of BPA and phthalate-free, stain and odor-resistant durable Eastman Tritan plastic; dishwasher safe; manufacturer’s limited lifetime warranty