* Shake It Up Smart Features * Patented BlenderBall Mixes as You Shake * Eastman Tritan bottle is BPA Free and Odor Resistant * SportLoop makes the Bottle easy to Carry or Clip to Your Pack * Rugged, Leak-Proof Design Handles Rough-and-Tumble Treatment * Rubber over Molding on Lid Offers a Firm Grip * Ounce/Milliliter Marking Let You Hit Your Mark * 28-oz and 20-oz Sizes let You go Big or Pack Light The SportMixer"s patented stainless steel blenderball mixes up your favorite hydration drinks, supplements, meal replacements and more - perfectly smooth, every time.