DescriptionThe premier shaker bottle since 2004 with its leak proof seal and the iconic BlenderBall® wire whisk. The adjustable carry loop lets you hold more of what you take to the gym or the office. Measurement marks included up to 12 Oz., 20 Oz. capacity to cup brim. The patented BlenderBall® wire whisk moves around inside the bottle to thoroughly mix your ingredients every time. Made of surgical grade stainless steel, it's designed to remain in the bottle until you've finished the contents.