Bonded vs. Seamless Swimwear: What’s the Difference?

If you’ve ever searched for a swimsuit that fits like underwear, you might think that "seamless swimwear" is the answer...   

But here’s the catch: “seamless” doesn’t always mean seam-free or edgeless.

So what’s the difference between "seamless" swimwear and our bonded swimwear that fits like underwear? Let’s break it down.

What Is Seamless Swimwear?

Traditional “seamless” swimwear is designed to eliminate visible external seams. Instead of leaving the seam on the outside, the fabric is typically folded inward and sewn together.

The result? A cleaner-looking swimsuit from the outside, but you're left with a thick, bulky seam on the inside. And because the fabric is doubled over on the edges, it can look even bulkier on the body. 

So while "seamless" swimwear may sound smoother than traditional swim, it's pretty much the same thing. 

That didn't cut it for us.

What Is Bonded Swimwear?

onewith's dig-free bonded swimwear uses entirely new construction altogether.

Instead of sewing layers of swimsuit fabric together with traditional seams, bonded swimwear uses bonding technology to join the layers together.

At onewith, our patented construction uses two layers of traditional swimsuit fabric bonded together to create smooth, lay-flat, edgeless swimwear.

The end result is a swimsuit that feels less like a traditional swimsuit, and more like your favorite pair of no-show undies.

Why We Created onewith

We created onewith because we were tired of traditional swimwear.

Then we tried “seamless” swimwear, thinking it would finally give us that smooth, second-skin feeling we wanted.

It didn't.

The seams were still there. They were just hidden on the inside.

So we asked ourselves: Why can't a swimsuit actually fit like no-show underwear? and quickly invented it!

Our patented bonded swimsuit construction was designed to create the smooth, lay-flat swimsuit fit we had been looking for, without the tight, bulky edges we hated about traditional and “seamless” swimwear.

A Quick Comparison of Bonded vs. Seamless Swimwear

The biggest difference between bonded swimwear and "seamless" swimwear is how the swimsuit is constructed.

"Seamless" swimwear is made by folding the swimsuit fabric inward and sewing it together so the seam isn't visible from the outside. While this creates a cleaner appearance, the internal seam is still thick, tight, and bulky against the skin.

Bonded swimwear fuses 2 layers of normal swimsuit fabric together, instead of using tight, bulky seams that squeeze. The result is a smooth, second-skin fit swimsuit that lays flat on the body. 

In other words:

• "Seamless" swimwear hides the seam.
• Bonded swimwear eliminates the need for seams along the edges entirely. 
• "Seamless" swimwear still has internal stitching and folded fabric.
• Bonded swimwear is designed to create a smoother, flatter, dig-free, flattering swimsuit fit.
  

So, is bonded swimwear better than "seamless" swimwear?

If you're looking for a smooth, second-skin swimsuit feel without bulky edges, bonded swimwear is the way to go. We created swimsuits that fit like seamless underwear because we didn't want to make a swimsuit that simply looked seamless. We wanted to make one that actually felt that way. To shop the best flattering swimsuits for women, visit the onewith collection here. For a close look inside the world of swim that fits like underwear, be sure to follow onewith on Instagram.