Rebound training puts a spring between you and the ground, so your legs do the work and your joints take less of the landing. Here is what the research actually measured, how to size a pair, what the weight limit really means, and how to tell a boot built to last from one that is not.
What rebound training is, in one paragraph
Rebound training is cardio performed on a spring. In bounce shoes, an oval spring frame sits under each foot and compresses on landing, storing part of the force that would otherwise travel up through your ankles, knees and hips, then returning it to push you back up. The work still happens in your legs and core, and your heart rate still climbs. What changes is how much of each landing your joints absorb. It is the same principle as a mini trampoline, with the trampoline strapped to your feet so you can move around instead of staying in one place.
Does it actually reduce impact, or is that marketing?
There is measurement behind it, though less than the category’s marketing implies.
A 2021 study in the Journal of Bodywork and Movement Therapies put 15 physically active women through jump-landing and running tasks in a rebound shoe and again in a standard running shoe, measuring vertical ground reaction forces. The rebound shoe reduced the impact of jump landings by roughly 20 percent and the impact of running by 11 percent, and it lengthened the time to peak force, meaning the load arrived more gradually rather than as a spike.
Three honest caveats, because they matter more than the headline. Fifteen participants is a small sample. The shoe tested was not this one, and we have not had ours independently tested, so those figures describe the category rather than our product. And the authors state plainly that the long-term effects of using these shoes still need to be investigated. What the study supports is a reasonable claim: rebound footwear meaningfully changes the shape of the landing force compared with a running shoe. It does not support a claim that any particular pair is clinically proven to protect your knees.
If you already have a knee or ankle injury, that is a conversation with a physiotherapist rather than a purchase decision. Nothing on this page is medical advice.
The parts that decide whether a pair is any good
Bounce shoes look alike in photographs and are not alike in the hand. Five components do all the work.
- The shell. The rigid outer boot that holds your foot. Hard TPU holds its shape under a heavier user. A softer plastic flexes at the edges of the sole, which is where the wobble comes from when a cheap pair feels unstable at speed.
- The spring frame. A closed oval leaf spring under each boot. Closed is the point. It is a continuous loop, so the load spreads around the whole curve instead of concentrating at a hinge.
- The tensioner. Elastic rods running between two anchor blocks across the frame, which set how much resistance the spring gives back. This is the part that determines how the boot actually feels, and the part most sellers never photograph.
- The liner. A removable padded inner boot. It is what stops the rigid shell rubbing, and being removable is what stops it smelling after three weeks.
- The closure. Multi point buckle straps. A boot with one strap does not hold the heel down, and a heel that lifts on the upswing is how ankles roll.
Bounce shoes compared with the other low impact options
No single answer here. It depends on what you want the session to do.
| Bounce shoes | Mini trampoline | Running | Jump rope | |
|---|---|---|---|---|
| Impact on joints | Low, spring absorbs the landing | Lowest, mat absorbs almost everything | Highest of the four | High, all of it through the ankle |
| Can you move around | Yes, anywhere flat | No, fixed spot | Yes | Mostly fixed spot |
| Balance demand | High at first, this is the learning curve | Low | Low | Moderate |
| Space needed | An open flat surface | About a square metre | Outdoors or treadmill | A few square metres |
| Cost to start | Higher | Moderate | Trainers only | Very low |
| Learning time | Two or three short sessions | Immediate | Immediate | Days to weeks |
| Best for | Cardio with less joint load, outdoors or in a class | Very low impact at home | Endurance and distance | Conditioning and footwork |
The honest positioning: if you want the lowest possible impact and you are happy staying in one spot, a mini trampoline is cheaper and easier. Bounce shoes earn their price when you want to move, when you are bored of staying still, or when you want the intensity of running without running’s landing forces.
Ready to try it? Kangaroo Bounce Jump Shoes in All Black · The same boots in Hot Pink and Black
What to look for when buying any pair
Whoever you buy from, these are the checks that separate a pair built to last from one that is not.
- A published maximum user weight. This is the single most useful signal in the category, and the one most listings leave out. A spring rated for a load it is not given will fatigue. Rebound boots are not covered by a harmonised European safety standard the way domestic trampolines are under EN 71-14, so a stated, specific weight limit is the closest thing to a quality declaration you will get. A seller who will not give you a number either does not know it or does not want to.
- A stated shell material. "Durable plastic" is not a material. TPU is.
- Real sizes, not size bands. Some ranges sell one shell across two or three sizes with a thicker liner to fill the gap. That is cheaper to make and it fits worse. Ask whether each listed size is its own shell.
- A removable liner. Non removable means unwashable.
- More than one strap. Look for a cuff strap plus at least one over the instep.
- A spare parts answer. Tensioner rods are a wear part on every brand. Ask what happens when one goes.
- Weight per pair. Around 3 kg for the pair is normal. Much lighter usually means a thinner shell.
Which pair, and which size
Our own boots run EU 35 to 44, which is US 4.5 to 11.5, and every listed size is its own shell rather than a shared shell with a thicker liner. They carry a stated maximum user weight of 138 kg, or 304 lb, across every size and colourway, the shell is rigid TPU with a breathable mesh upper, and a removable padded liner comes with every pair.
On sizing: order your normal shoe size. If you are between sizes, size up. The buckle system takes up the slack, and a slightly roomy fit works better than a tight one because your foot swells over a session.
On colour, the six options are a genuine choice rather than a merchandising trick, and the only real consideration is whether you want to be seen. All Black and Silver and Black disappear; Hot Pink and Blue do not.
They are sized for teens and adults. They are not a toy for young children, and we do not sell them as one.
Living with them
Give yourself two or three short sessions on flat, open ground before you add any speed. Stand first, then walk, then bounce. Wear wrist and knee protection while you are learning, which is the advice every experienced jumper gives and most first-time buyers ignore.
Before every session, check that all buckles are fully closed and look at the bolts where the spring frame meets the boot. Stop using them if anything is loose, bent or cracked.
Afterwards, take the liners out to air, wipe the shell with a damp cloth, and let everything dry fully away from direct heat before storing.
Stay on flat, dry, even ground. Wet grass, loose gravel, sand and stairs are where people get hurt.
Frequently asked questions
Are bounce shoes safe?
They are as safe as the ground you use them on and the protection you wear. The mechanism itself lowers landing forces compared with running. The risk is not the spring, it is balance while you are learning. Start on a flat open surface, wear wrist and knee pads for the first few sessions, and check the buckles before every use.
How long does it take to learn?
Most people find their balance within two or three short sessions. Walking in them first, before bouncing, shortens it considerably.
What is the weight limit and why does it matter?
Ours is 138 kg, or 304 lb. It matters because the spring is rated to it. Going over the limit changes how the frame rebounds and fatigues it faster, so the number is a safety and durability spec, not a suggestion.
What size should I order?
Your normal size. Between sizes, size up. The buckles take up the slack and a roomy fit beats a tight one.
Are they easier on the knees than running?
Measurements on rebound footwear point that way. The 2021 study above found roughly 20 percent lower impact on jump landings and 11 percent on running, with the force arriving more gradually. That is general information about the category, not a clinical claim about any one product, and not medical advice. If you have an existing knee or ankle problem, ask a physiotherapist first.
Do they come with anything else?
A removable padded inner liner with every pair.
The short version
Rebound training is cardio on a spring, and the spring takes a real measured share of each landing that your joints would otherwise absorb. The research is promising and small, and it was done on a different product, so treat it as evidence about the category. When you are comparing pairs, the published maximum user weight tells you more than any other number on the page, because it is the one thing a seller cannot fudge without being caught. Order your normal size, size up if you are between, and give yourself three short sessions and a set of wrist pads before you go anywhere near speed.
The product
| Product | Sizes | Weight limit | Colours | Price |
|---|---|---|---|---|
| Kangaroo Bounce Jump Shoes, Spring Loaded Fitness Boots | EU 35 to 44 (US 4.5 to 11.5) | 138 kg / 304 lb | Hot Pink and White, Hot Pink and Black, Silver and Black, Black and Green, Blue, All Black | €159 |
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