Both fixed and adjustable dumbbells are valuable and can give you a great workout, but adjustable dumbbells will give you more bang for your buck. They let you have multiple weights in one device, and easily customize your workouts with a quick-adjust dial. Plus, they’ll take up much less space than a full rack of fixed dumbbells, so you can store them practically anywhere with ease. The SmartBell is perhaps the most valuable adjustable dumbbell out there, with a durable storage rack, anti-slip handle, and sturdy design that’ll provide safe, seamless workouts for individuals of all fitness levels.