I love these bottles! They work SO well! I take mine along everywhere I go! Head over to Walmart and get this Protein Shake Bottle for Only $6.50! (Reg. $10.20). The spinning blades of this Protein Shake Bottle Travel Tumbler by Chef Buddy seamlessly blend protein and drink powders or can mix coffee and other beverages with ease! This tumbler helps you to be mindful of your health and fitness and effortlessly track liquid intake by using the clearly marked measurements on the bottle, available in both ounces and milliliters.