This BPA free protein drink mixer bottle, complete with leak proof lid, lets you enjoy mixed beverages ranging from your daily protein shake, vitamin supplements, to baby formula and even homemade lemonade or tea. The unique mixing design features an X-shaped internal component that you might recognize from a childhood game of Jack. This drink mixer is guaranteed to powerfully mix even the thickest of powdered beverages. The shaker cup's functional design and handle ensures that you or your child can enjoy any mixed nutritional drink anytime, anywhere, and on-the-go. With a quick run through the dishwasher, this mixer cup also doubles as reusable water bottle. With perks like these and many more, the Jaxx bottle promises a clog and clump-free beverage for any nutrition savvy gym-goer, mother, and child-so get shaking!