The blenderbottle classic 20-Ounce includes a wire whisk that moves freely inside the bottle to mix ingredients. Features a secure screw-on lid, a wide mouth for easy mixing, and embossed markings that measure both ounces and milliliters (note: measurements only go to 12 ounces). The BlenderBottle classic is dishwasher safe, BPA- and phthalate-free.