"Seriously the best most comfortable swimsuit." - Anna



















What Makes It Special
- Magic buttery soft crinkle fabric that adapts to your changing body
- One suit for every chapter: weight changes, new seasons of life and every age
- Bump-friendly, with room to grow
- Easy-release neckline
- Medium coverage for a comfortable, confidence-boosting fit
- Seamless sides comfortably adapt to your changing body
- Thick, quality fabric for great coverage even when stretched out
- Handmade in the UK with premium materials
FIT & FABRIC
- One size comfortably fits AU sizes 6–16
- And Cup sizes A–DD
- Fabric: 95% nylon, 5% elastane
SHIPPING & RETURNS
- Fast shipping from our AU warehouse
- Shipping options shown at checkout
- We offer a perfect fit guarantee - love it or return it within 14 days for a refund - no questions asked
SUSTAINABILITY & ETHICS
We believe in slow fashion that's better for you and the planet.
All our swimsuits are handmade in small batches.
We manufacture in the UK to ensure ethical practices, premium materials and an amazing quality suit you can feel great in and about!
Delivery
Guarantee
in the UK
"Seriously the best most comfortable swimsuit. I have it in two colors now and the only swimsuits I wear!"
Sarah M. - Verified Buyer
As Featured In
"Finally a swimsuit that actually fits. The one-size concept sounded crazy but it works."
Jessica R. - Verified Buyer
As Featured In
"Seriously the best most comfortable swimsuit. I have it in two colors now and the only swimsuits I wear!"
Sarah M. - Verified Buyer
"Finally a swimsuit that actually fits. The one-size concept sounded crazy but it works."
Jessica R. - Verified Buyer
Your Body Changes.
Your Swimsuit
Shouldn't Have To.
Most crinkle swimsuits stretch out, lose shape, or leave you adjusting all day. Ours doesn't. We engineered our one-size fabric for real bust support, full coverage, and a fit that adapts to your body – not the other way around. Hit play to see exactly how it works.
One swimsuit. Every stage. Yours to keep.
One suit for every season of life
The everyday
One size that fits AU 6‑16 and cups A‑DD. No guessing, no squeezing.
The bump
Room for a growing bump, without looking like maternity wear.
The baby days
Nursing-friendly straps and stretch that moves with you once the baby comes.
Every age & shape
Supportive fit and medium coverage you can feel confident in, at any age.
Adjustable. Flexible. Bounces back.



Why Women Love Our One Size Crinkle Swimsuit
Designed to solve the common frustrations of sized swimwear
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Stylish & Practical
Want stylish, practical swimwear that works whatever your body is doing this year
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No More Squeezing
Don't want to squeeze into conventional sizes or settle for frumpy suits
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Safe & Easy To Wear
No harsh chemicals, with an easy-release neckline and adjustable straps
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Comfortable & Confident
Want to feel comfortable and confident in a swimsuit that celebrates your growing and changing body
Real Women, Real Confidence
Real Women. Real Confidence.
Your Perfect Fit - Personally Guaranteed
We're a small, women-owned business - and every single suit is ethically handmade in the UK in small batches with the highest quality checks at every stage.
Our magical four-way stretch fabric moulds to your body and comfortably fits AU sizes 6–16. We're so confident you'll love it that I personally back every suit we make.
If it doesn't fit perfectly, simply send it back within 14 days and we'll refund you - no questions asked.
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Fast Delivery
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Perfect Fit Guarantee
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Handmade in the UK
Your Perfect Fit - Personally Guaranteed
We're a small, women-owned business - and every single suit is ethically handmade in the UK in small batches with the highest quality checks at every stage.
Our magical four-way stretch fabric moulds to your body and comfortably fits AU sizes 6-16. We're so confident you'll love it that I personally back every suit we make.
If it doesn't fit perfectly, simply send it back within 14 days and we'll refund you - no questions asked.
Frequently Asked Questions
1. Is it really one size?
Our 'One Size Fits Most' method is suitable for a AU 6-16, depending on desired fit.
The material stretches as your body changes, whether that's weight, age or a baby bump, and returns to your desired shape afterwards.
2. How do I care for my swimsuit?
With the right care, your swimsuit will be your go-to for seasons to come.
Follow these instructions so your suit can continue to feel as good as you do wearing it.
How to avoid any damage or premature wear
- Do not twist or wring, which will overstretch the (already stretchy) fibres of the suit
- Avoid contact with sunscreen, lotions, oils, or bleach. We’d suggest applying suncream, lotions or oils once your suit is on and work your way around it
- Avoid spas or hot tubs
- Do not dry clean, tumble dry, or store when wet.
If you do want to wash your suit, here's how:
- Hand wash in cool, fresh water immediately after use
- A small amount of diluted, mild detergent may be used
- Bunch swimsuit into a ball and squeeze to remove excess water
- Lie in the shade or hang to dry
Don't worry, we'll send these instructions with your swimsuit too.
3. Shipping & returns
We ship domestically from our AU warehouse using premium shipping providers. Shipping options, costs and delivery times are shown at checkout for your address. Orders are tracked, and you'll receive tracking details once your order is fulfilled.
We accept returns within 14 days of delivery. A $9.95 return shipping fee is deducted from your refund to cover the cost of your return label - exchanges are always free.
To start a return, visit our Shipping & Returns page or email hello@marisnsol.com with your order number. Please allow up to 24 hours for your request to be processed.
Full returns policy on our Shipping & Returns page
Sale items 20% off or more, are final sale - see our sale terms for more.
4. Will it fit my long torso?
It’s likely! It’s seriously flexible - in all directions.
Many people around 6ft tall wear our one-pieces and find the fit to be super comfortable.
5. What about bust support?
Our suits don't include any built-in bust support, as this would limit their special ability to adapt to your changing body.
The super-flexible, seamless fabric adapts to fit your body and will lightly hug your shape in ways a typical swimsuit wouldn't - but this kind of support will come down to personal preference.
Our one-size swimsuit comfortable accommodates cup sizes A–DD
While the suit offers excellent coverage, for extra peace of mind, if you have a large bust or darker areola, we recommend using silicone swimming nipple covers.
6. What is the fabric composition?
Our swimsuits are responsibly handmade in the UK.
The fabric is made of 95% Nylon and 5% Elastane
Pink Sugar Colour: While the suit offers excellent coverage, for extra peace of mind, if you have a large bust or darker areola, we recommend using silicone swimming nipple covers.


