Adjustable Bowflex dumbbells and kettlebells are up to $170 off as part of Amazon's post-Christmas sale

This thing is like having six kettlebells in one. It's the perfect at-home option because it’s adjustable, so you don’t need to store a bunch of kettlebells of different weights.

How does it work? When it’s sitting in the base, just turn the dial to the desired weight — anywhere from 8 pounds to 40 pounds. Lift the kettlebell, and it’s good to go.

The space-saving model has earned the endorsement of thousands of fans. One satisfied customer writes: "Definitely the best thing I've ever purchased for exercise. The convenience of this kettlebell has really got me working out and enjoying it. I bought this during COVID quarantine and it has been a perfect purchase…. "

Additional features include free access (via the Bowflex app) to 24 trainer-led exercises — swings, rows, squats, twists — for a full-body workout, plus tips on improving your kettlebell form.

Like the kettlebell above, the Bowflex dumbbells adjust to meet the needs of everyone in your home. They can be as light as five pounds and as heavy as 52.5 pounds; you can fine-tune in 2.5-pound increments for the first 25 pounds.

These genius dumbbells include access to an app for building custom workouts. Bowflex is also adding a two-year warranty on weight plates and parts, in case you're a little too strong and somehow damage this indestructible equipment.

One five-star reviewer says: "...I have been using them about 5 days a week, on average. We moved out of an apartment [building] that had a gym, into a house. [This] has enabled me to use a little space in the garage to keep my workouts up without the gym costs….”

Don’t let these deals slip away. Grab (and lift!) this genius Bowflex equipment at a massive discount while you can — and enjoy them for a lifetime.