December 13, 2025
Are onewith Swimsuits "Seamless" Swimsuits?
I know what you’re thinking… “If I want a swimsuit that fits like seamless underwear, then I should get a seamless swimsuit, right?” 🤔 We totally get why people assume that, but the truth is, our swimsuits that fit like underwear® are actually better than seamless swim. While “seamless swim" may promise a smoother swimsuit fit, it doesn't deliver the lay-flat, second-skin fit you'd expect. Here’s why:

“Seamless” swimsuits are in their own category of swim. If you’re looking for a swimsuit that fits as edgeless and smooth as seamless underwear, “seamless” swimsuits sound like they could really fit that bill. “Seamless” swimwear sounds like it could be all the things that make seamless underwear so flattering. However, "seamless" swimwear just gets its name from the fact that there’s no external appearance of seams. Unfortunately, there are still very much tight seams inside that dig and squeeze; they’re just flipped inside out so you can’t see them. This construction actually has the opposite effect: it’s more bulky on the body, looks more cumbersome, and still digs and squeezes in all the wrong places. 😒
That’s why we always say our swimsuits that fit like underwear® are BEYOND-seamless 💅 Our ultra-flattering swim is made with our patented bonded construction; no tight seams or elastic that digs and squeezes to be found. We take two layers of normal swimwear fabric and bond them together to create an ultra-flattering swim-that-fits-like-undies look and feel. We’re not hiding anything, we’re not flipping anything inside out. We really are just that smooth. While we totally understand why people might call onewith “seamless” swimwear, it’s just technically not true; they’re two different things. So if you're looking for a swimsuit that fits like your favorite no-show undies, go beyond seamless swim, and try our edgeless swimsuits instead. 
Reminder that you should always wear what swimsuit makes you feel your best, but we figured it’s helpful to explain this distinction ☺️ If you're ready to ditch traditional or "seamless" swim and try our lay-flat swimwear instead, check out our collection of swim that fits like undies here. Be sure to follow along on IG for all onewith updates!
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