14 oz capacity shaker Bottle for mixing protein shakes, smoothies, and supplements,uses 304 stainless steel Blender 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,Wide mouth makes it easy to add mix scoops and liquids, and embossed markings measure both ounces and milliliters.