• 20-ounce capacity (note: measurements only go to 12 ounces) 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 bottles
• Screw-on lid creates leak-proof seal, and flip cap snaps securely shut to keep contents contained; 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