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.

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 😊

We offer a 14-day return/exchange policy on our swimwear. The 14-day window begins the day of carrier-confirmed delivery. A customer's first exchange is FREE so they can ensure they find their perfect onewith size.  Returns incur an $12.50 fee to cover shipping. Returns and exchanges MUST come back to us in their original, unworn condition. Read more about the onewith Return Policy here.

⚠️ NOTE: ITEMS MARKED FINAL SALE + MYSTERY BUNDLES ARE ABSOLUTELY, POSITIVELY FINAL SALE. No returns, no exchanges, no exceptions. 

onewith is proud to offer international shipping!

all international sales are positively FINAL. no returns or exchanges are available for international orders.

shipping rate to your country is calculated at checkout, and is set by the carrier. in most cases, this rate also includes duties/customs! ☺️

We are a US-based company; our suits are designed in North America and made in China. Our lead partner factory is female-founded, Sedex certified, and SGS ISO:14001 system certified. All pieces are made of 80% nylon, 20% elastane, and we use fabric with recycled content as we can per supply chain availability.

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.

⛔ Bracketing + high-quantity first orders are STRONGLY discouraged: while we understand the desire to find your best size(s) and styles, ordering multiple variants of a piece with the intention of returning those that do not fit/suit you creates inventory issues for us as a small business, and also compromises hygiene best practices. We encourage conscious consumerism by way of small, mindful first orders of 1-2 units. While we naturally love when you stock up on your fave swim once you know your best onewith size, please do so mindfully for our other customers' sake (that is, without the intention of returning extra sizes/styles). While this may be more permissible for an enterprise-level company, we ask that you consider how bracketing + large returns affect a small business, its customers, and the environment. Returns of 4 or more pieces/customer will be subject to a processing fee of $15.95 in addition to the return fee.

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.

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!