Best Fitness deal: The FitRx SmartBell is available at a $110 discount

SAVE $110: As of Dec.1, the FitRx SmartBell Quick Select Adjustable Dumbbell(opens in a new tab) is down to just $89 at Walmart. That's a savings of 55%

While you're probably fit enough to climb a flight of stairs without gasping, you may still be lacking adequate muscle mass. If you're repeatedly struggling to open that jar of pickles, or you keep on watching Mr. Olympia videos on a loop, you might be thinking of purchasing some weight training exercise equipment. However, buying multiple weights can set your wallet back. What if there was an all-in-one alternative?

In comes the FitRx SmartBell Quick Select Adjustable Dumbbell(opens in a new tab), now available at Walmart for $89, $110 below its retail price. At a 55% discount, you can perform an array of exercises with this single instrument without burning a hole in your pocket.

The single-piece dumbbell has 10 plates with 15 different weight combinations, starting from a low of 5 pounds up to 52.5 pounds, making it a product that can be used by your entire family based on each of your current strength levels. With built-in 2.5-pound and 5-pound weight increments, you can gradually build up your strength, without logging into your Amazon or Walmart account every few months to look for a new weight. The ergonomic design makes it easy to lift and rotate, making it possible to perform more complex exercises that go beyond standing dumbbell curls.

The anti-slip handle prevents any workout mishaps, while the safety lock keeps the weight from rolling around by holding it in one place. You can go ahead and grab this weight today, and in case you're looking to perform more lower-body exercises or simply save some time — just grab a pair for $178.