Whether you're weight training for sports, competing for the gold at the Olympics, or simply aiming to lose weight and stay fit, Blender Bottle's premium and innovative products help you maintain proper nutrition and hydration every step of the way. Shaker with Loop Top, you can mix up the toughest protein and meal replacement powders. Add a banana or mix in a little ice cream. Whatever you are craving, BlenderBottle has you covered. The patented mixing system uses the BlenderBall wire whisk. Features a "StayOpen" flip cap and the classic screw-on lid. This shaker bottle is 100percent leakproof. The adjustable carry loop lets you hold more when your hands are full and provides a convenient place to attach your keys while at the gym. Made from the highest quality materials. This shaker is BPA and Phthalate free. Easy to clean and dishwasher safe. Embossed ounce and milliliter markings helps you keep track of your intake. Get the best selling shaker bottle on the market. Holds 32 ounces not including the BlenderBall and powders/supplements. Why the Whisk Ball? Unlike stationary mesh grates or other in-lid elements, the BlenderBall whips around inside the bottle as you shake. The BlenderBall is springy and bounces off both the top and the bottom of the bottle, working against the liquids. Made from electropolished 316 grade stainless steel, the same material used in surgical instruments and implants. Add ingredients like peanut butter, applesauce or yogurt to your protein or meal-replacement shakes for added flavor - the BlenderBall whips them in with ease. The BlenderBall will never rust, chip or peel. Every BlenderBall is manufactured using a unique multistage process designed to ensure safety, quality, and longevity.