Founding Batch: fewer than 8% left. Be the first to ZWIM.

Founding offer
An athlete training on the ZWIM Smart Trainer at home

Connected Swim Training

The swim is the one workout you can't do at home. Until now.

Real training for your swim, in 15 minutes between pool days. No lane to book, no drive, no opening hours to work around.

Pump up in 30 seconds. Training in under three minutes.

Pre-order now

Founding offer: £99 for 15 months, then £99 a year for as long as you stay a founding member. Founding members also get limited ZWIM goggles and cap.

Your stroke. Your swimmer. Your game.Discover ZWIM ↓
15 minutesBetween pool days
30 secondsTo pump up. Training in under three minutes.
30 daysTo train on it at home

The missing sessions

You can train everything but the swim from home.

The bike goes on the trainer in the garage. The run starts at your front door, any time, in any 30-minute gap. But the swim? It's the one discipline chained to opening hours.

ZWIM at home on the ZWIM Smart Trainer15 to 35 minutes. Between pool days.

The gaps you already have

Pump up in 30 seconds.
Training in under three minutes.

ZWIM is real training for your swim, done without leaving the house. The ZWIM Bench 2.0 inflates itself at the press of a button in 30 seconds, then you train against real resistance that loads the propulsion phase of your stroke. Done in 15 to 35 minutes. No lane, no drive, no wet kit in the boot.

01

Before work

15 minutes while the coffee brews, and the swim’s done before the day starts.

02

Before the bike

Switch the stroke on, then head out on the trainer or the road.

03

On a lunch break

A full session and a shower, with time to spare.

04

In a hotel room

It packs down and travels, so training doesn’t stop when you do.

One training window. One shower. No booking, no drive, no lanes to fight for.

How ZWIM fits into your week

Your pool days stay.
The gaps become sessions.

How many pool days do you get?
Your week nowYour week with ZWIM
2 pool days +3 ZWIM =5 sessions

An example week. The pool stays essential.
ZWIM keeps the feel alive between pool days.

Pool sessionZWIM at home · 15 to 35 minRest

The ZWIM Experience

Training you come back to.

Most home training dies of boredom. This doesn't. Your stroke drives a game: a world to move through, targets to chase, and live data (Propulsive Watts) climbing as you improve. So the reps happen not because you force them, but because you want to.

Choose your session in the ZWIM app

Choose your session

A session that fits today.

Choose your workout. Set your time. The next 15 minutes are yours.

One connected loop

What you're actually training on.

ZWIM is a smart trainer for your swim. You train against real resistance, and the patent-pending ZWIM Smart Paddles read every stroke, turning it into live feedback on a screen.

the power and efficiency of every stroke, not just how hard you went.

Patent-pending ZWIM Smart PaddlesThe part that reads your stroke.ZWIM Smart Paddles
See how ZWIM works ↗Explore the ZWIM Experience ↗

Victor shows you the difference

Change your stroke.
Watch your number respond.

A good stroke. A bad stroke. Watch Victor change the movement and see what happens to his Propulsive Watts, live on screen.

Real movement. Live feedback. Sound on.
7.4×

More likely to report they got faster.

Owners of our first swim trainer who trained 9+ times a month between pool days, compared with those who did none. 61% against 8%. Self-reported survey of 495 owners.

Association, not a measured ZWIM result. People who trained more may also have swum more or been more motivated.
20,000+ swimmers trained on our first swim trainer4.6/5 from 427 published reviews

Their words. Their sessions.

Press play.
Meet the people on ZWIM.

From a first try at our office to the Bianchi Pro Triathlon team. See what happens when they get on ZWIM.

Charlotte is ZWIM’s co-founder. Athlete and customer experiences, filmed on ZWIM.

Victor and Charlotte at an Ironman

Why we built ZWIM

My first triathlon started with a panic attack, 200 metres into the swim. I finished the 1500 metres in 34:35 at Triathlon du Mont Blanc and knew exactly what the problem was. Not fitness. Reps. Two pool sessions a week was all my life had room for, so I built the thing that gave me the third.

Victor Jarland Founder, ZWIM

Founding offerBe the first to ZWIM.

Founding Batch: fewer than 8% left. Membership for our community and early adopters: £99 with 3 months free, then £99 a year for as long as you stay active. Founding members also get limited ZWIM goggles and cap. Fewer than 8% left.

Refund until it ships 30 days risk-free 2-year warranty
01 / 09
The ZWIM Smart Trainer Patent-pending Smart Paddles, the ZWIM Bench 2.0 with built-in Speed Pump, 3 Propulsion Bands. Plus the game and app.
Connected Swim Training
4.6 427 reviews on our first swim trainer

ZWIM Smart Trainer

For triathletes who are done with “just surviving the swim”.

The swim gets better with reps. ZWIM gives you the extra reps between pool days. 15 minutes at home, real resistance, live feedback on your stroke. No pool hours to work around.

Real data to track from week one
For the first time, your stroke has a number. Propulsive Watts measure the power and efficiency of every stroke.
A session you want to repeat
A 3rd or 4th pool session isn't realistic. This is, 10-35 minutes at home, stroke as controller, workouts and targets waiting.
Stop starting over every pool day
Keep the feel alive with two short sessions in between, and the catch is waiting the moment you get to the pool.
ZWIM Smart Trainer £349
What's in the box
ZWIM Bench 2.0 Built-in pump · Stabilising Base ZWIM Smart Paddles Patent-pending 3 Propulsion Bands LVL 1 to 3 · easy, endurance, power Door anchor + loop No drilling, no tools USB-C charger Battery life: 150 km at 2:00 /100m zwim training plan Your first 30 days, mapped
Choose your membership
ZWIM Smart Trainer £349
ZWIM Membership · 15 months for 12£99
ZWIM goggles + cap · worth £65Included
Delivery · United Kingdom Free
Due today £448
Your 15 months start the day you activate your ZWIM Smart Trainer.
Takes you to secure checkout. You see the full order before you pay. Questions first? Call +44 (0)207 846 0169, Monday to Friday, 9 to 5 UK.
Founding BatchShips from 28 Dec
Founding BatchShips from 28 DecOnly 8% left
Next batchShips from 29 JanOpens next
30 days risk-free at home
Cancel for a full refund before it ships. After delivery, train on it for 30 days. If it’s not for you, send it back for a full refund.Pause or cancel later and the trainer still works, with a basic dashboard for your data.
The game, the world and every loop in it Structured workouts, challenges and Free ZWIM, as each one ships Live Propulsive Watts, stroke rate and left and right balance Post-session review, full history and personal bests The ZWIMMER community, and leaderboards when they land Every update, new loop and new feature as it ships

One more thing.

Does this replace the pool?

No. The pool stays exactly where it is. ZWIM takes the days in between, the ones that were never going to be pool days anyway. You just arrive at the pool already switched on.

When does my membership start?

When you activate your trainer. The annual founding plan includes 15 months for £99 in the first term, then renews at £99 every 12 months while you stay annual.

What if I change my mind?

Full refund for the trainer and membership any time before it ships. After arrival, you have 30 days to train on it at home. The hardware has a 2-year warranty.

A ZWIM session at home

Train the swim on your schedule, not the pool's.

Pre-order now

Founding Batch: fewer than 8% left. Founding members ship first and get limited ZWIM goggles and cap.

● Not ready to commit?

Join ZWIM. Decide in your own time.

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