The Jillian Michaels Ultimate 20lb Adjustable Powerbell provides an excellent whole body workout. The tool will help you tighten your abs, fight arm & back flab & tone your glutes & thighs. The powerbell features a revolutionary Space Saver design that replaces an entire array of kettlebells in one convenient set. The powerbell enables you to easily change the intensity of your workout with five removable 3lbs (1.3kg) weights. The Jillian Michaels Ultimate 20lb Adjustable Powerbell is supplied with an instructional DVD with Jillian Michaels who will provide you with useful tips for a successful workout.