* Shake It Up * BPA Free * Genuine Blender Bottle Power up your routine with the bottle that"s ready for action. Whether you mix up your favorite shakes for workouts or workdays, the BlenderBottle"s patented stainless steel BlenderBall delivers perfectly blended drinks without missing a beat. Smart Features * Patented BlenderBall mixes as you shake * BPA-free materials * Wide opening makes it easy to add ingredients * StayOpen Flip Cap stays put - open or closed * Large drinking/pouring spout * Embossed ounce/milliliter marks give you volume control * GripperBars offer a solid hold * Both 28-oz and 20-oz sizes fit in your cup holder * Top-grade engineering works right, every time