Bowflex Adjustable Dumbbells.
Each dumbbell adjusts from 5 to 52.5 pounds; adjusts in 2.5-pound increments up to the first 25 pounds.
Lets you quickly change from one workout to the next.
Incorporates 15 sets of weights into one, utilizing a special dial system.
Removes the requirement for several dumbbells littering your workout space.