Currently, the top-rated dumbbell in Walmart would be the FitRx SmartBell, with a 4.3 overall satisfaction rating from nearly 200 consumer reviews. It features an anti-slip handle, a safety lock, and a quick-select weight dial that lets you customize the weight in increments ranging from 5 to 52.5 pounds, making it perfect for all strength levels. Plus, its included storage tray allows you to conveniently store it just about anywhere in your home and holds any plates not being used. The FitRx SmartBell is a space-saving and cost-effective tool that will let you easily increase your weight as you grow stronger!