If you’re new to onewith, you might be wondering how it’ll feel once you slip it on. (spoiler alert: it’s amazing) but just in case you need a little extra guidance, we’ve created a handy fit guide to make sure your first try-on is perfection. view guide here
RETURNS
SHIPPING
onewith you from the inside out ↔️
|
other swim brands | |
|---|---|---|
| edgeless (no digging!) | ||
| no squeezing (elastic-free!) | ||
| no hidden seams inside | ||
| raw-cut (lays-flat on the body!) | ||
| inner grip inside to keep secure | ||
| made with 2 layers of fabric |
please take our size quiz! it's the pink button that says 'CLICK HERE to find your size.' that is on every single product page on our site.
you only need to take it once, and your best size will automatically display for each product on our site, depending on how that product runs.
if you still want help in finding your size, reference our size guide here.
additionally, chat us on-site (quickest!) or DM us on IG and we can help you out.
We offer 1 free exchange on eligible US orders so that you can find your best onewith size.
Returns are available for a $12.50 fee per order (additional fee will apply if you're returning more than 3 items).
US orders purchased at a discount of 30% or more are eligible for return for store credit ONLY. no refunds or exchanges.
International orders are ALWAYS final sale.
You may return/exchange your eligible order within 14 days, the 14-day window begins the day of carrier-confirmed delivery.
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 = 2 layers of normal swimwear fabric, just like any other swimwear. people tend to think our swim is either 1 layer of fabric, and/or super thin, like no-show undies. that is not true! again, our swim has 2 layers of fabric. It's just bonded together, not sewn with tight seams, which gives it a sleeker appearance that people may read as "thin." While we can't guarantee our suits are frontal-wedgie-free, so-to-speak as every person's anatomy is different, we can say that there is no reason why our suits would cause 🐪toe more than any other swimwear.
yes, all of our bikini tops + one pieces have removable bust cups that you can leave in, or take out!
we get it, the itch to get your swim that doesn't dig in ASAP is real! luckily, we do offer an Express shipping option if you do need it ASAP. otherwise, we offer free standard shipping on US orders over $85. all orders with standard shipping ship from our Connecticut, USA warehouse within 2-5 business days of receiving your order.
ALL onewith suits feature our inner grip strip, which keeps the suits secure without the use of tight seams or elastic that digs. the inner grip strip is super soft and flexible.
this is swimwear unlike anything else on the market, so with that, it has some special instructions to truly get a fit that's onewith your body ✨ 'warming up your onewith’ (aka giving the garment a stretch) is MISSION-CRITICAL to the fits-like-undies vibe. your swim actually SHOULD dig in a bit to start if it’s your proper size. then, with a stretch at the openings, it should fit and feel smooth, like a second skin (and/or your fave seamless undies) 🫧
It is super cute and comfortable I wish I took a picture before I “warmed it up” but it’s EXACTLY what a mid-size girl like me was looking for it’s flattering in all the right places and it doesn’t dig or slide when I’m swimming or just lounging around I’m absolutely obsessed with this bathing suit brand I already preordered the Jennings bottoms and can’t wait to love them as much as I love the penfield! I truly have never felt more confident in a pair of bathing suit bottoms, I’m currently on a weight loss journey for health reasons and this is the only brand of bikinis that gives me the confidence to wear them out, truly there is nothing better!
Thank you so much for your incredible review, Allison! We're absolutely thrilled to hear how much you love your Penfield High Waist Thong Bikini Bottom! It means the world to us that you're feeling so confident and comfortable in your suit - it looks like it was made for you! We know how important it is that swimwear stays in place, while being flattering and supportive, and we're thrilled that you've found that perfect combination with your Penfield bottom. Your journey is inspiring, and we're honored to be a small part of it! Thank you for your continued support - we know you'll love the Jennings too! Enjoy your onewith 🌊
5’9” 146lbs 30in waist. Ordered large to start but were too big. Medium fits great. They are exactly as advertised. Snug to start but stretch to perfection.
Thank you so much for your incredible review, Kristin! We're absolutely thrilled to hear how much you love your Penfield thong bikini bottom! We're so happy that after swapping sizes, the fit is exactly what you were looking for. We're excited for you to rock your perfectly-fitting onewith all summer long! 🌊
I'm pretty short (5'1"), and I love how the high waist makes my legs look long for the first time ever. I did size down as suggested, and it fits me perfect. I also love how the front has plenty of coverage and the grips keep it from sliding around, without being uncomfortably tight. So I'd worn somewhat cheeky bottoms before, but this is my first full-on thong, so I was a little shy about wearing it at first. But seriously, everyone loves it! Now it's my fave. I even wore it on my family's cruise to the Caribbean, and I got nothing but compliments! Seriously, buy it!
Thank you so much for your incredible review, Kenzie! We're absolutely thrilled to hear how confident and amazing you feel in your Penfield thong! The high-waist, high-cut leg definitely creates that perfect leg-lengthening effect you're loving. We love that you're loving your onewith and can't wait for you to create more amazing beach memories in it!
I have waited so long for a pair of swim bottoms to fit like this and to actually be a flattering thong without making me feel like I’ve been tied up with butchers string and things popping out where they shouldn’t. I’m in between sizes right now and I’m losing weight pretty quickly, but it feels great to know that I can sit the waist up higher or lower depending on how I’m feeling and knowing it won’t slip
Thank you so much for your wonderful review, Jennifer! We're over the moon to hear our Penfield thong bikini bottom exceeded your expectations in both fit and coverage. It's always been our goal to provide swimwear that makes every body feel beautiful, confident, and comfortable. Enjoy your onewith :)
