Empower Grip Plate Weighted Fit Disc, Kettlebell, Dumbbell, Medicine Ball with Handles, 3-in-1 Weight Set 3 FITNESS WEIGHTS IN 1: Weighted fit disc can be used to perform the same exercise moves as a kettlebell, medicine ball, and dumbbells TOTAL BODY WORKOUT: Target abs to improve core strength, perform muscle conditioning, cardio intervals and overall flexibility BURNS MORE CALORIES: Includes DVD and workout guide. Burn 300 calories in 30-minutes with our workout program that combines 45-second intervals of cardio, core and strength HIGHLY EFFECTIVE WORKOUT: Scientifically proven to be up to 50% more effective for working the core than a kettlebell, medicine ball or dumbells ERGONOMIC DESIGN: Weight plate fit disc has an ergonomic and smooth shell that is easy to grip and is soft on your hands