How it works

Two sizes. Fits like
it was made for you.
Two sizes. Fits like it was made for you.

Your body changes. Your swimsuit shouldn’t have to. Our unique Versoform™ fabric adapts to your shape, providing gentle support without restriction.

Find your Stretch

Click the size you usually wear Which size do you usually wear?

Stretch IFits UK 6–16A–G cup Your adaptable fit
Stretch IIFits UK 18–28Up to J cup Your adaptable fit

Flexes in every direction

Adapts to your unique shape — through weight changes, pregnancy, and every up and down.

No side seams

Specially knit in a circular shape — no seams, nothing to dig, pinch or restrict.

Holds its shape

While it holds yours, this summer and next.

What people ask before they buy

“I’m a D cup or bigger.”

Stretch I adapts to fit up to an F cup, Stretch II up to a J. No underwire or padding — the hold comes from the luxuriously knit fabric itself.

Stretch I adapts to fit up to an F cup, Stretch II up to a J. No underwire or padding — the hold comes from the luxuriously knit fabric itself.

“I’m a 38HH on top and a stretch 2 holds me and doesn’t cut in at all.”
Christine P. · usually UK 20 · Stretch II

“My body is changing.”

The suit adapts with you, so it doesn’t need replacing every time your body changes — through pregnancy, after, and in between.

The suit adapts with you, so it doesn’t need replacing every time your body changes — through pregnancy, after, and in between.

“I wore it before, during, and after my pregnancy and it still fits like a glove.”
Shannon S. · usually UK 18 · Stretch I

“Is it worth the price?”

Your Youswim keeps fitting as your body changes, summer after summer. It’s knitted, dyed and sewn in England using premium European-sourced OEKO-TEX® certified materials.

Your Youswim keeps fitting as your body changes, summer after summer. It’s knitted, dyed and sewn in England using premium European-sourced OEKO-TEX® certified materials.

“I’ve had this swimsuit for 5 years and it still looks great!”
Christina O. · usually UK 14 · Stretch I

“It looks tiny. Will it really fit?”

Lots of customers say this when they open the box. The knit sits compact until you put it on, then opens to your shape.

Lots of customers say this when they open the box. The knit sits compact until you put it on, then opens to your shape.

“It looked tiny in the box but stretches out and fits perfectly.”
Anna L. · usually UK 6 · Stretch I

Try it for 21 days. Not right? Return or exchange it, no questions asked.

★★★★★ 4,000+ 5-star reviews

Designed for the body you’re in

Not approximately.
Not “close enough”.
Like it was made for you.
Not approximately. Not “close enough.” Like it was made for you.

01

Fits through all of life’s changes

Pregnancy, weight changes, every up and down — this summer and next. It holds its shape while it holds yours.

Pregnancy, weight changes, every up and down — this summer and next.

02

Two sizes that fit like a glove

It flexes in every direction and springs back, so one size covers six UK sizes. Find your size

Flexes every way and springs back — one size covers six UK sizes.

03

So comfortable you’ll forget it’s on

Buttery-soft Versoform™, knitted in one continuous piece — no side seams to dig, pinch or restrict.

Buttery-soft, knitted in one piece — no side seams to dig or pinch.

One-size fit, innovated

Everyone here is
wearing the same size.

Usually UK 6
Usually UK 8
Usually UK 10
Usually UK 12
Usually UK 14
Usually UK 16

No size charts. No ordering two just in case. Choose your Stretch and it adapts to you — through bloating, pregnancy, postpartum and everything in between.

Youswim vs your old suit

Swimsuits that actually fit. Swimsuits that
actually fit.

— Youswim Your old suitYour old suit
Get your size right the first timeTwo sizes replace a dozen traditional ones
Still fits as your body changesWeight changes, pregnancy, and everyday ups and downs
Gentle support without restrictionButtery-soft Versoform™ knit with no wires, padding or pinching
Keeps its shape, summer after summerKnitted, dyed and sewn in England with OEKO-TEX® materials
So comfortable you'll forget it's onRated 5-stars by 4,000+ customers
Choose your size
“Youswim’s swimsuits are actually magic.”
“Some kind of sorcery is at work here, but it’s the real deal.”
“You might never have to buy another swimsuit again.”
“These ultra-stretch suits are the most comfortable we’ve ever tried.”
“This is one of the most lovely swimsuits I’ve ever worn.”
“I’ve never met an un-wired swimsuit that’s actually worked... until now.”

Reviews

4.6 · 520 reviews

All reviews are from actual customers.

No reviews for this style yet.

Worn by our community

Questions, answered

What if I’m between Stretch I and II? What if I’m between Stretch I and II?

Stretch I will offer a tighter fit at the top of its size support, while Stretch II will offer more coverage and room for growth.

If you’re likely to fluctuate between sizes or you’re planning a pregnancy, we recommend Stretch II which will offer more coverage and space for growth while still shrinking back post-partum. Like magic.

I’m a D cup or bigger — will it hold me? I’m a D cup or bigger — will it hold me?

Stretch I adapts to fit up to an F cup, Stretch II up to a J. No underwire or padding — the hold comes from the luxuriously knit fabric itself.

Will it fit through a pregnancy? Will it fit through a pregnancy?

Yes! It adapts as your body changes — many customers wear the same suit before, during and after pregnancy. It really is that adaptable. 

How do I care for it, and how long does it take to dry? Care, and how long it takes to dry

Hand wash in cool fresh water after each wear, squeeze into a ball (don't wring), and hang over a line to dry. Keep away from tinted sunscreen, oils, and bleach. Care guide

It looks tiny in the box. Will it really fit? It looks tiny in the box. Will it really fit?

Lots of customers say this when they open the box. The knit is compact until you wear it, then adapts to your unique body before returning close to it's original shape.

What if it doesn’t fit? What if it doesn’t fit?

Try it within 21 days. If it isn't right, return or exchange it — no questions asked. 

Sale items are final sale. 

If you have any questions, we're here to help. Email hello@youswim.com

Still deciding?

Take the fit quiz, or try it within 21 days. If it isn’t right, return or exchange it — no questions asked.

Ask our team
Designed for the body you’re inKnit, dyed and sewn in England21-day returns + exchanges