Whether you're weight training for sports, competing for 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 Cup, 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, Blender Bottle has you covered. The patented mixing system uses the BlenderBall wire whisk. It features an updated lid with a more ergonomic carry loop and SpoutGuard. The rounded base allows the BlenderBall whisk to mix every bit of powder. This shaker bottle is 100percent leakproof. Integrated with the StayOpen flip cap and the adjustable carry loop lets you hold more when your hands are full. BPA and Phthalate free, easy to clean and dishwasher safe. The embossed ounce and milliliter markings helps you keep track of your intake. Get the best selling shaker bottle on the market. 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.