For more info, check out our size chart here.
This low-scooped, thin-strapped sports bra bikini top is designed for days when you want to amp up the sporty & flirty, but still want your swimsuit to feel like underwear. Thanks to the comfy inner grip tape, Thames stays in place for you, while the patent-pending onewith swim bonded edgeless construction (and removable cups!) (AND total lack of constrictive elastics!) allows your curves - and comfort - to take center stage.
- 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:
Thames Scoop Neck Bikini Top
- Unit price
- /per
🤨 need more guidance on what size to choose? chat us! our team of fit experts will help you! 💬
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
secure payment
Adding product to your cart
This low-scooped, thin-strapped sports bra bikini top is designed for days when you want to amp up the sporty & flirty, but still want your swimsuit to feel like underwear. Thanks to the comfy inner grip tape, Thames stays in place for you, while the patent-pending onewith swim bonded edgeless construction (and removable cups!) (AND total lack of constrictive elastics!) allows your curves - and comfort - to take center stage.
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:
- KSKaylee S.Verified BuyerWhat is your typical bra size? 32A14 hours agoWhat is your typical bra size? 32AReviewingThames Scoop Neck Bikini TopRated 5 out of 5 starsLOVE
color is true to picture, super cute! love the fit and it is super comfortable! can’t wait to wear it to the pool/beach!
Was this helpful? - KCKatie C.Verified BuyerWhat is your typical bra size? 32BWhat size did you purchase? S2 months agoWhat is your typical bra size? 32BWhat size did you purchase? SReviewingThames Scoop Neck Bikini TopRated 5 out of 5 starsThe best ever LITERALLY
This swimsuit might actually be the best swimsuit I’ve ever tried on. It doesn’t move I tried the arm test and the squad test and the girls stayed in not to mention it doesn’t cut off my body, and it actually makes my boobs look perky which never happens even though the price is a little bit higher it’s definitely worth the buy.
Was this helpful?Oonewith1 week agoThank you so much for this incredible review, Katie! We're over the moon that your onewith has passed all the tests with flying colors, and we're thrilled that your Thames is providing a flattering, stay-put fit. We're so glad to hear you find the quality and performance worth it. Your glowing feedback means the world to us! Enjoy rockin' your onewith 💙
- LSlauren s.Verified BuyerWhat is your typical bra size? 34DWhat size did you purchase? M3 months agoWhat is your typical bra size? 34DWhat size did you purchase? MReviewingThames Scoop Neck Bikini TopRated 5 out of 5 starscomfy and doesn't pinch any where!
Super cute - i'm so happy with it
Was this helpful?Oonewith2 months agoHi Lauren, thank you so much for your review! We're so happy to hear you love your Thames and that it doesn't pinch or dig. Enjoy your onewith!
- YSYelena S.Verified Buyer5 months agoReviewingThames Scoop Neck Bikini TopRated 5 out of 5 starsCute and comfy
I think this is as comfy as it is cute and I’m so happy with it. And it’s perfectly roomy! Much more tts than I expected.
Was this helpful?Oonewith5 months agoHi Yelena, thank you so much for this kind review! We're so glad to hear you found the Thames to be super comfy and cute! This style does run particularly true-to-size, and we're happy you thought so too!