BlenderBottle Bottle Perfect Protein 28 Ounce Kitchen & Dining Review

28-ounce capacity (note: measurements only go to 22 ounces) sleek and durable Pro28 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. Wide mouth makes it easy to add mix scoops and liquids, and embossed markings measure both ounces and milliliters; rounded base for thorough mixing.