1MR BPI branded 600ml protein shaker. Mix your protein shakes up quickly, easily and without mess. No more lumps and easy to clean. The essential product for using at work, or keep one in your gym bag to mix your post workout shake. Graduated measuring scale up the side so you know exactly how much milk, juice or water you've added. With secure and easy to use screw on lid, plus internal mixing ball to break up protein and ensure proper mixing.