Smooth Tastes Good
The patented BlenderBall wire whisk—found only in BlenderBottle shaker cups—is the secret behind the ProStak's power. Add your ingredients, drop in the BlenderBall, and shake. The BlenderBall whips around inside the bottle, mixing your drinks to a smooth consistency, every time.
Made of 316 surgical-grade stainless steel, the BlenderBall is designed to remain in the bottle until you've enjoyed the contents. Just drinking water? Feel free to leave the ball inside - it'll never rust, chip, or peel.