Best of Buy Side Awards 2025: Fitness

Best adjustable dumbbell for serious lifters

Nüobell’s adjustable weight dumbbells go from 5 pounds to 80, one of the largest range we tested. But you’ll pay for that versatility — they also have the highest price among our test set. To add or subtract weight, you simply put the dumbbells in the included tray, turn the dial to your preferred pounds, and slide the weight plates on or off. The weights left on the bar lock into place fairly easily with the help of magnets, something not all adjustable-weight dumbbells have.