One upside of pandemic lockdowns was that it showed us just how much we can accomplish at home. My fancy gym membership was quickly replaced with a variety of on-demand workouts from Apple Fitness+. But even with the best streaming trainers, one truth remains the same: we could always use more space for workouts, right? An entire rack full of dumbbells takes a lot of space (and a pretty big budget too). A smarter option is to combine that whole rack into one set. Because while you can get far with bodyweight exercises and bands, when it comes to building a bigger chest and broader back, there's no beating dumbbells. The same goes for toning your shoulders and defining your biceps. And you can do it all from your bedroom with a weight-shifting set of dumbbells. They're easy to use—swap in lighter and heavier weights mid-workout with the flick of a switch or turn of a knob—and even easier to store when you're done working out. Here, the best options to buy depending on your needs and personal style.