For more info, check out our size chart here.
The Hampton High-Waisted High-Cut Bikini Bottom feels like your go-to seamless underwear. Featuring a leg-lengthening high-cut, classic back coverage, and our widest band of bonding around the waistband, this is the perfect bikini bottom that covers the lower belly.
We ditched the elastic and tight seams you typically find in swimwear, because, well…we figured nobody (err, no body?) would miss those.
- Garment imported from China
- Designed in USA, patent-pending
- Soft, flexible inner grip strip to keep the suit secure
- LATEX INFORMATION: we can not guarantee that the inner grip strip inside of our suits does not contain trace amounts of latex. Therefore, if you have a latex sensitivity or allergy, we recommend you exercising the same caution and sensibilities you would take in general when determining whether or not to use or wear a product that may contain latex.
- Dig-free, elastic-free, edgeless smoothing laser-cut construction, just like your fave undies
- 80% nylon 20% elastane
- Hand wash only (rinsing in the shower is just fine), lay flat to dry
Ready to find your perfect onewith fit? Just click the 'Take the 'find my size quiz' here' button on any product page, answer a few simple questions. Once completed, your best size will populate, tailored to each and every style on our site for all our products as you continue to shop. 🎉
Now, remember—everyone's unique, and preferences, along with the human body, are more dynamic than any size chart or quiz could ever capture. That being said, our sizing quiz is the next best thing to actually trying on our suits in person 😉🔍
Disclaimer: While we strive to provide the most accurate sizing guidance possible, please note that individual fit preferences and proportions may (read: WILL) vary. Buying the size that the size quiz suggests does not guarantee your fit.
If you have any further questions or concerns, our dedicated customer support team is always here to assist you (chat us, DM us, email us, etc!) and, we offer 1 free courtesy exchange on eligible orders 🩵 read our full return/exchange policy here.
SIZE | BUST | WAIST | HIPS | |
XXS | 00 | 30 -31 | 22-23 | 33-34 |
XS | 0 | 32 - 33 | 24 - 25 | 35 - 36 |
S | 2-4 | 34 - 35 | 26 - 27 | 37 - 38 |
M | 6-8 | 36 - 37 | 28 - 29 | 39 - 40 |
L | 10-12 | 38 - 39 | 30 - 31 | 41 - 42 |
XL | 14-16 | 39 - 41 | 32 - 34 | 43 - 45 |
2X | 18-20 | 42 - 44 | 35 - 37 | 46 - 49 |
3X | 22-24 | 45 - 48 | 38 - 41 | 50 - 52 |
4X | 26-28 | 49 - 52 | 42 - 45 | 53 - 55 |
Bellows One Piece Torso Measurements
SIZE | INCHES - shoulder to crotch, relaxed | |
XS | 24.25 | |
S | 25 | |
M | 26.75 | |
L | 27.25 | |
XL | 28 | |
2X | 28.75 | |
3X | 30.75 | |
4X | 31.25 |
When sized and stretched properly, onewith will NOT dig in. Remember: you're a human being, and bodies are so much more dynamic than just numbers on a size chart. DM us if you want further guidance on best size!
NOTE: Do NOT expect our suits to be IDENTICAL to no-show underwear in fit. Do note that our suits do not have the same amount of stretchiness of standard no-show panty due to the inner grip strip & bonding.
Looking for cup sizes? We don't size by cup! Go with the measurement of the fullest part of your bust, and reference the Bust section of the chart. Or, shortcut alert 📣 order the same size you would for a camisole/tight tank!
"can I just order a few sizes and styles and return what doesn't fit???"
please don't 🫠🫠🫠🫠 read about high volume returns here. (hint: we charge additional return fees for this! it's not great for our small business, the environment, and other customers ☹️)
Some IRL size reference pics for you:
Hampton High-Waisted Bikini Bottom
- Unit price
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🤨 need more guidance on what size to choose? chat us! our team of fit experts will help you! 💬
🎉 enter code SURPRISE at checkout for a secret discount 👀
see it on 👀
see our size guide/take our sizing quiz for sizing tips!
80% nylon, 20% elastane
have questions? email or DM us!
FREE shipping on all US orders over $85
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Adding product to your cart
The Hampton High-Waisted High-Cut Bikini Bottom feels like your go-to seamless underwear. Featuring a leg-lengthening high-cut, classic back coverage, and our widest band of bonding around the waistband, this is the perfect bikini bottom that covers the lower belly.
We ditched the elastic and tight seams you typically find in swimwear, because, well…we figured nobody (err, no body?) would miss those.
For more info, check out our size chart here.
- Garment imported from China
- Designed in USA, patent-pending
- Soft, flexible inner grip strip to keep the suit secure
- LATEX INFORMATION: we can not guarantee that the inner grip strip inside of our suits does not contain trace amounts of latex. Therefore, if you have a latex sensitivity or allergy, we recommend you exercising the same caution and sensibilities you would take in general when determining whether or not to use or wear a product that may contain latex.
- Dig-free, elastic-free, edgeless smoothing laser-cut construction, just like your fave undies
- 80% nylon 20% elastane
- Hand wash only (rinsing in the shower is just fine), lay flat to dry
Ready to find your perfect onewith fit? Just click the 'Take the 'find my size quiz' here' button on any product page, answer a few simple questions. Once completed, your best size will populate, tailored to each and every style on our site for all our products as you continue to shop. 🎉
Now, remember—everyone's unique, and preferences, along with the human body, are more dynamic than any size chart or quiz could ever capture. That being said, our sizing quiz is the next best thing to actually trying on our suits in person 😉🔍
Disclaimer: While we strive to provide the most accurate sizing guidance possible, please note that individual fit preferences and proportions may (read: WILL) vary. Buying the size that the size quiz suggests does not guarantee your fit.
If you have any further questions or concerns, our dedicated customer support team is always here to assist you (chat us, DM us, email us, etc!) and, we offer 1 free courtesy exchange on eligible orders 🩵 read our full return/exchange policy here.
SIZE | BUST | WAIST | HIPS | |
XXS | 00 | 30 -31 | 22-23 | 33-34 |
XS | 0 | 32 - 33 | 24 - 25 | 35 - 36 |
S | 2-4 | 34 - 35 | 26 - 27 | 37 - 38 |
M | 6-8 | 36 - 37 | 28 - 29 | 39 - 40 |
L | 10-12 | 38 - 39 | 30 - 31 | 41 - 42 |
XL | 14-16 | 39 - 41 | 32 - 34 | 43 - 45 |
2X | 18-20 | 42 - 44 | 35 - 37 | 46 - 49 |
3X | 22-24 | 45 - 48 | 38 - 41 | 50 - 52 |
4X | 26-28 | 49 - 52 | 42 - 45 | 53 - 55 |
Bellows One Piece Torso Measurements
SIZE | INCHES - shoulder to crotch, relaxed | |
XS | 24.25 | |
S | 25 | |
M | 26.75 | |
L | 27.25 | |
XL | 28 | |
2X | 28.75 | |
3X | 30.75 | |
4X | 31.25 |
When sized and stretched properly, onewith will NOT dig in. Remember: you're a human being, and bodies are so much more dynamic than just numbers on a size chart. DM us if you want further guidance on best size!
NOTE: Do NOT expect our suits to be IDENTICAL to no-show underwear in fit. Do note that our suits do not have the same amount of stretchiness of standard no-show panty due to the inner grip strip & bonding.
Looking for cup sizes? We don't size by cup! Go with the measurement of the fullest part of your bust, and reference the Bust section of the chart. Or, shortcut alert 📣 order the same size you would for a camisole/tight tank!
"can I just order a few sizes and styles and return what doesn't fit???"
please don't 🫠🫠🫠🫠 read about high volume returns here. (hint: we charge additional return fees for this! it's not great for our small business, the environment, and other customers ☹️)
Some IRL size reference pics for you:
- VBVictoria B.Verified Buyer1 month agoReviewingHampton High-Waisted Bikini BottomRated 5 out of 5 starsPerfect seamless fit!
These bottoms are full coverage, sit perfectly on my body, and don’t dig in at the seams at all! While moving around the suit stays put but doesn’t feel stiff at all!
Was this helpful?Oonewith1 week agoVictoria, thank you so much for your review! We're so glad you're loving the beyond seamless fit and feel of Hampton, and that it hugs you in all the right places for an ultra-flattering look. Enjoy your onewith!
- SDStephanie D.Verified Buyer1 month agoReviewingHampton High-Waisted Bikini BottomRated 5 out of 5 starsFits so good and material feels divine - def size down
As a curvy girl who fluctuates between size 14-16 and 16-18
I read reviews to size down but I was a little nervous bc I usually size up and thought maybe it’ll be fine. Wearing it(2x) dry fit like a glove but not tight on my skin - now usually that would be fine but once I got in the water it expanded a lot ! everytime I swam forward/anyway under water it would just fall and expose my lower tummy. I can’t exchange since I wore it so I ordered another one in XL. I’m hoping it won’t fall as much as the 2x in water but I thought ordering a L was pushing it lol so we shall see . Other than that I really love the material and how it feels on! The most comfortable bikini I’ve ever worn in my life tbh! Boosted my confidence as a curvy girly ily onewith ♡
Was this helpful?Oonewith1 week agoThank you so much for your review and feedback, Stephanie! We're so glad you love the comfortable fit of Hampton! We're sorry to hear your first order turned out to be too big. Please note, our suits require a gooood stretch as directed to help warm up that soft inner grip strip that lines our suits. If your suit did not require a stretch, then that's a sign it's too large to start, and when worn in the water, it will allow for the water to move between your body and the suit, which can lead to it stretching out an undesired amount. We hope you've been loving the size down!
- JHJill H.Verified Buyer2 months agoReviewingHampton High-Waisted Bikini BottomRated 5 out of 5 starsPerfect
I’m a small chested big hip girl. I weigh 150lbs, and my normal size in pants is 8 or large. My biggest problem with swimsuits is my hips look like a busted can of biscuits with how the swimsuits are cut. I used to opt for lace up around the hips, but those are hard to come by. This swimsuit is perfect. There is no bulging at the hips, which is a miracle for me.
Was this helpful?Oonewith3 weeks agoWe're so glad you found us, Jill! Sounds like Hampton is your perfect onewith fit, dig-free and oh-so-smooth! Thank you so much for this kind review. Enjoy your onewith!
- EWErin W.Verified Buyer2 months agoReviewingHampton High-Waisted Bikini BottomRated 5 out of 5 starsLove them
They fit perfectly, wire them to a 9 hour lake day wasn’t uncomfortable at all
Was this helpful?Oonewith3 weeks agoThat's what we like to hear! We're so glad your Hampton stayed in place and was comfortable for a lake day! Thank you so much for this review, Erin :)