frequently asked questions
we know our swimwear is like nothing else on the market (and we intended for it to be that way of course! 💅) and that can come with some questions about our super unique swimwear that fits like underwear. we hope this helps helps answer them.
for further inquiries, please email info@onewithswim.com
does that strip inside your suits contain latex?
onewith 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 or adhesive sensitivity/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 or other adhesive, should you have a known issue with these substances.
what size am I?
In general we are true-to-size. But please reference our size guide here. Each product page features a fit note to help you choose your best size for that particular style if you find yourself in-between sizes 😊
what happens if my swimsuit doesn't fit? can I return/exchange?
we offer a 14-day return/exchange policy on all swimwear, beginning the day of carrier-confirmed delivery. a customer's first exchange is free — so take the guesswork out of finding your perfect onewith fit. returns for store credit are also free; returns for a refund incur a $12.95 fee (additional fees apply for high-volume returns of 4+ items). items purchased at a discount of 30% or more are eligible for store credit only. all returns and exchanges must come back in original, unworn condition with the hygiene liner intact.
⚠️ NOTE: items marked final sale and all international orders are final sale — no returns, no exchanges, no exceptions.
do you ship internationally?
onewith is proud to offer international shipping!
all international sales are positively FINAL. no returns or exchanges are available for international orders.
where are your suits designed & made, and what kind of fabric is it?
We are a US-based small business, located in Connecticut. Our garments are designed here in North America, and produced with our trusted partner factories in China. Our fabric is 80% nylon, 20% spandex.
are your suits see-through?
Our suits are 2 layers of fabric just like any other swimwear...it's just bonded, not sewn with tight seams, so that it lays flat on your skin like your favorite no-show underwear. onewith is no more see-through than other swimwear. If you are sensitive to sheerness, as with all swim, opt for a darker color.
if I don't know my size, can I just order multiple sizes and return what doesn't work?
⛔ bracketing + high-quantity first orders are discouraged: while we understand the desire to find your best size and style, ordering multiple variants with the intention of returning what doesn't work creates inventory challenges for us as a small business and compromises hygiene best practices. we encourage conscious consumerism — start small and mindful, and once you've found your perfect fit, stock up! please note that returns of 4 or more items are subject to an additional processing fee.
are your suits thin? like, will they cause 🐫toe?
Our suits are 2 layers of fabric just like any other swimwear; it's just bonded, not sewn with tight seams. So while it may have a thinner appearance, it is the same amount of material as most standard suits. So if you're worried about a case of 🐫toe, while we can't guarantee our suits are frontal-wedgie-free, so-to-speak as every person's body is different, we can say that there is no reason why our suits would cause it more than any other swimwear. If you're ever worried about anything showing through, a general swim tip is to opt for a darker color or a suit in a pattern.
when are you restocking?
We post launch and restock dates as soon as we can, be sure to follow us on Instagram for the latest & greatest of all things onewith!
didn't find your answer?
our customer service team is here to help!
1 FREE exchange on eligible US orders
size inclusive (XXS-3XL)
patented, US Patent No. 12,357,039
