With the ProForm Rapid Strike 50 Lb. Adjustable Dumbbell Set, each dumbbell can become five dumbbells. Quickly modify each dumbbell in 10-pound increments, from 10 to 50 pounds. Based on your fitness level, you can turn one dumbbell into a 10 pound, 20 pound, 30 pound, 40 pound, or 50 pound dumbbell. With an iFIT membership, you can use your phone, tablet, or TV to follow expert iFIT Trainers in worldwide outdoor workouts and studio workouts. iFIT Trainers can help you master a huge variety of dumbbell exercises, like bicep curls, shoulder presses, chest presses, tricep kickbacks, dumbbell rows, and more. With the Rapid Strike 50 Lb. Adjustable Dumbbell Set, you’ll be able to target nearly every muscle group, from your lower body to upper body, and you’ll be able to choose the weight of your choice. You’ll save plenty of space since you’ll only need to buy one dumbbell set rather than 5 dumbbell sets. Turn any space in your home into your own personal home gym. Included storage trays give your dumbbells a secure and elegant way to store in your home. Durable steel construction of the dumbbells provide a sleek, aesthetically-pleasing finish, perfect for your home. *iFIT experience shown. Internet and WIFI required. iFIT Membership auto-renews for $39/mo plus tax unless canceled in advance. Cancel at any time.