28-Ounce capacity (Note: measurements only go to 20 ounces).Patented mixing system uses 316 surgical-grade stainless steel Blende Ball.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.Perfect for protein shakes, smoothies, pancake batter, and more.Dishwasher safe.