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I got rid of every fixed weight I owned. One pair replaced all 17 — and paid for itself in about seven months.

Home gym · Adjustable dumbbells

7 reasons this 17-in-1 dumbbell replaced my entire home gym

One pair. 5kg to 40kg. Seventeen dumbbells in the space of one pair, so I can train every lift at home without a pile of equipment or plates.

Shop the 40kg pair See the pair below
17-in-1 5kg to 40kg per hand
4.9★ 3,067 reviews
100,000+ happy customers
How it works: turn the smart-dial, select your weight, lift.

The rundown

Why one pair beats a rack of fixed weights

I got into this because I was tired of the clutter, and tired of how badly built most of the kit I had tried actually was. I also believe strength training is the best investment you can make in your life, so I wanted something I would still be lifting in ten years. These are the seven things that made the difference for me, from the weight range to the footprint to what it costs against buying seventeen pairs separately.

  1. 01

    17 dumbbells in 1

    It replaced my entire weight rack

    Every pair from 5kg to 40kg lives in one set of SmartBells. I turn the smart-dial, select my weight and lift. No clutter, and nothing left out on the floor.

    The single BrainGain SmartBells pair that replaces 17 fixed pairs of dumbbells
  2. The SmartBells pair on its stand, tucked into the corner of a room
    02

    Reclaim the room

    It fits where seventeen pairs never could

    Seventeen pairs of dumbbells worth of training in the footprint of one. Mine sits on its stand in the corner of the room, beside a desk, and the whole range is there the moment I want it.

  3. 03

    Best value, per Men's Fitness

    The maths beat buying them separately

    Buying 17 separate pairs of dumbbells costs well over £1,000 and takes a lot of space. Our pair is £299.99. When I put those two numbers next to each other, it stopped being a decision.

    "Best Value Adjustable Dumbbell."

    Highly Recommended, Men's Fitness
    Close-up of the SmartBells smart-dial mid-adjust
  4. Dil mid-workout with the 40kg SmartBells pair
    04

    Progressive overload built in

    2kg jumps keep me progressing

    The dial moves in 2kg increments across the full range, so there is always a next weight up waiting for me. That steady progression is the single biggest driver of strength and muscle over time, and it is the thing most home setups get wrong.

What it replaced for me

It pays for itself in about seven months

My gym membership was roughly £40 a month. At £299.99 the pair covers about seven months of that, and everything after it is free training.

The saving I did not expect was time. No commute, no waiting for a rack, no session written off because the gym was heaving. I train in a 20-minute window between calls and I am done.

  • No commute
  • No waiting for a rack
  • Train in a 20-minute window
  • Free training after about 7 months
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  1. 05

    One tool, every muscle

    A complete workout in two handles

    Press, row, curl, squat, lunge, RDL: dumbbells train every major muscle group. With 5kg to 40kg on tap I run a genuine full-body programme without leaving the house.

    Dil, BrainGain co-founder, curling the 40kg SmartBells adjustable dumbbell
  2. SmartBells build detail: dial mechanism, plate stack and coating
    06

    Built to be handled

    Gym-grade build I trust under load

    A secure dial lock, a comfortable grip and a durable coating, built to be racked and adjusted thousands of times. Every unit is quality assured and triple-checked before it leaves us, because this is weight you hold over your head.

    • 5kg to 40kg range
    • Turn-the-dial adjust
    • Quality assured & triple-checked
    • 24-month warranty
    • Compact stand available
  3. 07

    Not just me saying it

    100,000+ happy customers, 4.9/5 rated

    More than 100,000 people have now brought the full range home, and 3,067 reviews average 4.9 out of 5. I read them, including the ones that are not flattering, and they are why the product keeps changing.

    A customer training at home with the 40kg SmartBells pair

"The best dumbbells to bring the free weights room home."

GQ Magazine

The pair, ready to ship

One pair that covers the whole range

The SmartBells 40kg pair is 17 dumbbells in one: turn the smart-dial and move from 5kg to 40kg per hand in seconds. Light enough to learn a movement properly, heavy enough to keep challenging you as you get stronger.

It is backed by 100,000+ happy customers, a 4.9/5 rating from 3,067 reviews, and a 2-year warranty.

See the 40kg pair

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