A Smarter Dumbbell

Adjustable dumbbells have been around for years; the problem is that most sets are still hard to adjust. But the Probell dumbbells are easy. Turn the dial on the side of the holder to pick a weight from 5 to 30 pounds; the dial locks the unused weights in place while you do your curls. It's a good piece of equipment to work your entire shoulder and back areas. www.gymsource.com or (888-gym-source).