Stainless steel spillproof BlenderBottle for mixing supplements and smoothies features an easyopeneasyclose pushbutton flip cap with a sliding lock to prevent accidental opening 24ounce capacity interior markings go to 20 ounces offers plenty of room for supplements meal replacements or water Includes a 316 surgicalgrade stainless steel BlenderBall Whisk that mixes when the bottle is shaken for smooth shakes in seconds Doublewall vacuum insulation keeps drinks cold for up to 24 hours flexible ergonomic carry loop provides a comfortable hold Made from highquality BPA and phthalatefree materials hand wash cup dishwashersafe lid not for use with hot liquids