If you're looking to build strength, what's the difference between using dumbbells vs. kettlebells vs. barbells? Experts ...

These dumbbells are available in a bunch of sizes, so you can lift heavy or light, depending on your fitness goals. Buy them as pairs from three to 25 pounds or as a single for 40 pounds.

If you buy something via one of our links, we may earn a commission. The Gikpal 66-Pound 4-in-1 Adjustable Dumbbell Set is on sale for $83, a 54% discount from its normal price of $180.

(They’re easier on your floors, too.) The NordicTrack Vault also comes with its own set of dedicated dumbbells – ranging from 5 to 30 pounds – if you pony up for the $2,999 Complete package.

They were experienced with dumbbell-based resistance training and strong enough to evaluate each set through the highest weight (up to 55 pounds). All of the sets we tested were compact ...