Contigo Teal Shake & Go Fit Mixer Bottle 28 Fl oz. (828ml) Carabiner Handle New. The bottle is new and never open. The shaker bottle designed for mixing protein shakes and other beverages. It has a leak-proof lid: Features a secure cap to prevent spills while shaking. Carabiner handle: Includes an integrated handle with a clip for easy transport on a gym bag. Agitator ball: Equipped with a weighted shaker ball and a rounded bottom to reduce clumps and ensure smooth mixing. Capacity: Holds 28 fluid ounces (828 mL) and includes volume markings for measurement.