Blender Bottle Classic Loop Top Shaker Bottle, 20-Ounce, Clear/Green 20-ounce capacity (note: measurements only go to 12 ounces) shakercupfor mixing protein shakes, smoothies, and supplements Patented mixing system uses 316 surgical-grade stainless steel BlenderBall wire whisk found only inBlenderBottlebrand 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 BPA and phthalate-free, dishwasher safe; manufacturers limited lifetime warranty 20-ounce capacity (Note: measurements only go to 12 ounces) Patented mixing system uses 316 surgical-grade stainless steel BlenderBall found only in BlenderBottle brand shaker cups Updated features include patented loop top, ergonomic flip cap and tapered spout Perfect for protein shakes, smoothies, pancake batter, and more Dishwasher safe, BPA- and phthalate-free; available in three sizes: 20-ounce, 28-ounce and 32-ounce