swimsuits that fit like underwear®️
Patented, better-than-seamless swimwear that's dig-free, elastic-free, and edgeless...for a second-skin fit that is truly onewith your body.
as seen on
About us
Hi! we're onewith.
We invented swimwear that fits like no-show underwear.
Our patented swimwear is dig-free, elastic-free, and edgeless, just like your favorite no-show seamless undies! truly onewith a woman's body.
1 FREE exchange on eligible US orders
size inclusive (XXS-3XL)
patented, US Patent No. 12,537,039
the magic of wearing onewith
see it on, IRL
Size: M
Size: S + M
Size: 2XL
Size: S + M
Size: L
“we changed swimwear so that
women don't feel the need to
change themselves.”
Our Story
As seen on
ABC's Shark Tank!
We took our viral better-than-seamless swimsuits to swim with the Sharks...as seen on Season 16, Episode 9 of ABC's Shark Tank! 🌊 (and yes, we walked away from the Tank with a deal with not one, but TWO Sharks!) Watch on ABC.com or Hulu.
What people are saying
These are exactly what I’ve been looking for my whole life. I love the way I look in seamless underwear and always felt like I looked smushed in a regular swim bottom. This fits PERFECTLY
Jillian M.
Verified Buyer
Was very skeptical on the fit, but these truly do feel like your no show underwear!
Maritza R.
Verified Buyer
I probably have close to 100 bathing suits and NONE have the fit that these do!! They fit like they were custom-made and don’t need adjusting every time I get out of the water!
Amanda F.
Verified Buyer
My soft bits don’t spill. I’m comfortable and I look great. Exactly like my best of pair of underwear! It’s amazing
Janet R.
Verified Buyer
I’m obsessed, genuinely the best fitting bathing suit bottoms I’ve ever owned. Highly HIGHLY recommend! I am 5’4 ,145lbs and I got a size medium :)
Kylie B.
Verified Buyer
@onewithswim
@itsmisslys
@ahmeimae
@traceydoes_
