"Happy to invest in pieces that will continue to fit postpartum!" - Mackenzie
Top style: Amalfi Square
Portofino HoopTortoise shell detail
Amalfi SquareClassic square neckWaist: High-waisted
High-waistedFuller coverage
Low-waistedModest coverage
"Happy to invest in pieces that will continue to fit postpartum!"
- Mackenzie
Maternity, Postpartum & Beyond
Build Your Set Below
Buttery Soft Crinkle Fabric That Adapts To Your Shape
Build Your Set Below
Crafted with our signature buttery-soft crinkle fabric, this bikini stretches effortlessly to accommodate your growing bump and gently conforms post-baby, ensuring comfort and confidence at every stage. Whether you're in your first trimester or navigating postpartum changes, our bikini embraces your evolving silhouette without compromising on style.
🇬🇧 Responsibly made in the UK
🇺🇸 Shipped from the US
🫶 $1 From Every Suit Sold Donated To Pregnant Women & Babies In Need
Size: One Size – Fits US 2–16
- Regular price
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$190.00 USD - Regular price
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$205.00 USD - Sale price
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$190.00 USD
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What Makes It Special
- Magic buttery soft crinkle fabric that adapts to your changing body
- One suit for all seasons - pregnancy, postpartum, and beyond
- Nursing-friendly 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
- One size comfortably fits US sizes 2–16
- And Cup sizes A–DD/E
Shipping & Returns
- Fast 1-4 day shipping
- Express shipping options available
- 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 crinkle swimwear is 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!
Fast 1–4 Day Delivery
Perfect Fit Guarantee
Handmade in the UK
What Makes It Special
- Magic buttery soft crinkle fabric that adapts to your changing body
- One suit for all seasons - pregnancy, postpartum, and beyond
- Nursing-friendly 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
- One size comfortably fits US sizes 2–16
- And Cup sizes A–DD/E
SHIPPING & RETURNS
- Fast 1-4 day shipping
- Express shipping options available
- 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 crinkle swimwear is 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
"I wore it through my entire pregnancy and still wear it postpartum. Absolute game changer."
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
"I wore it through my entire pregnancy and still wear it postpartum. Absolute game changer."
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 Swimwear
Shouldn't Have To.
Most crinkle swimwear stretches out, loses shape, or leaves 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 bikini. Every stage. Yours to keep.
One bikini, worn at every stage
See how The Bump Suit adapts beautifully from pre-pregnancy through postpartum and beyond.
Perfect for everyday wear with a flattering, comfortable fit that celebrates your natural shape.
The crinkle fabric adapts and grows with your bump, providing comfort and support at every trimester.
Nursing-friendly design makes feeding easy, while the fabric gently adapts to your changing body.
Why Mums Love Our One Size Crinkle Bikini
Designed to solve the common frustrations of maternity swimwear
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Stylish & Practical
Want alternative, more stylish and practical swimwear for pregnancy, postpartum and seasons beyond
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No More Squeezing
Don't want to try and squeeze into conventional sizes or ugly maternity suits
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Safe & Nursing-Friendly
No harsh chemicals, with an easy-to-use nursing friendly neckline for breastfeeding
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Comfortable & Confident
Want to feel comfortable and confident in a swimsuit that celebrates your growing and changing body
Real Moms, Real Confidence
One bikini,
worn at every stage.
Designed with unique four-way stretch fabric to adapt flawlessly to your changing body.
Real Mums. 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 US sizes 2–16. 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 1–4 Day 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 US sizes 2-16. 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 US 2 - 16, depending on desired fit.
Our swimsuits work well over a baby bump, and post baby, as the material will stretch as your body adapts, and return 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 US warehouse using premium shipping providers. Orders are tracked and typically delivered within 3-7 business days. 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 marisandsol.com/returns or email hello@marisandsol.com with your order number. Please allow up to 24 hours for your request to be processed.
Full returns policy at marisandsol.com/returns
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,B,C,D&DD/E
Pink Sugar Color: 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 Color: 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.