Dumbbell Weight Vinyl Coated 4 lb Single vs Cando Cast Iron Vinyl-Coated Dumbbells, 4 lb

Both are 4 lb vinyl-coated cast iron singles, so the real differences are shape and labeling. The CanDo has a hexagon head that won't roll and prints the weight in lbs and kgs on the end, which matters in a rehab or studio setting. The generic 4 lb dumbbell uses a round head and a size-specific ergonomic handle. CanDo's 3.6 out of 25 ratings is middling, and its listed weight of 3.55 lb is below the 4 lb label, so check the actual weight if precision matters. Buy the CanDo for the anti-roll hex shape; buy the generic one if you want a simple round dumbbell with a shaped grip.

• Choose the 4 lb vinyl dumbbell if you want a round-head dumbbell with a contoured, size-specific handle for light toning and rehab work.
• Choose the CanDo 4 lb if you want a hex head that stays put on the floor and weight markings in both lbs and kgs.