What’s the best underwear fabric for you?

29. April 2025

What’s the Best Underwear Fabric for You? I Tested Them All So You Don’t Have To

"Comfort is not a luxury. It’s the foundation."
That’s something I found scribbled in a notebook years ago, and it stuck with me.

I used to think all underwear was basically the same — until I started paying attention. One day you’re rushing through a packed Monday in a pair that keeps twisting, riding, and rubbing, and the next, you’ve got a pair that feels like it’s not even there. That difference? It comes down to fabric. And wow, does it matter more than we think.

So, let me walk you through the three core fabrics we swear by at Comfyballs. I’ve worn them all. I've trained in them, lounged in them, traveled in them, even slept in them. Here's what you actually need to know—without the fluff.

COTTON – The Everyday Legend

There’s a reason this one’s our most popular. It just works.

Think of cotton as your reliable, no-drama best friend. You don’t need to think twice. It’s comfy, breathable, and handles everything from office days to weekend hikes. We comb the cotton before it’s turned into yarn, so you don’t get those annoying short fibers that make fabric scratchy over time. Instead, you get smooth, soft fabric that holds up wash after wash.

I wore our Cotton pair on a three-day city break last spring—temps went from 9°C to 22°C. No sweat (literally). No awkward shifting. Just pure comfort.
What it's made of: 92% Cotton / 8% Lycra®

COMFYCEL® – The Soft Touch With a Secret Superpower

Now this one’s special.

Comfycel® is our own fabric. We created it because we wanted something softer and smarter. It’s a mix of combed cotton, silky Tencel® lyocell, and a dash of Lycra®. Here’s what makes it stand out: it’s like cotton, but better at wicking away moisture. More absorbent. More breathable. And honestly? It just feels luxurious.

One summer, I had back-to-back meetings, a train ride, and dinner with friends—all in the same day. It was hot, I was moving a lot, but these boxers kept me dry and chill. Total game changer.
What it’s made of: 47% Cotton / 47% Lyocell / 6% Lycra®

PERFORMANCE – The Gym Buddy That Won’t Quit

Performance underwear isn’t just for athletes. It’s for anyone who sweats.

I first tested this pair on a trail run. Light rain. Slippery ground. Zero regrets. They’re made from a poly-Lycra blend, which means they’re ultra-light, stretch with you, and dry in a flash. Even after a brutal HIIT session, they didn’t hold onto that damp, clingy feeling. You know the one.

No Polygiene. No weird chemicals. Just smart fabric that moves like a second skin.
What it's made of: 84% Polyester / 16% Lycra®

So... Which One Should You Choose?

Go for Cotton if you want a reliable everyday pair that’s soft and durable.
Try Comfycel® if you're after the softest feel with bettermoisture management.
Pick Performance if you work out, sweat often, or want something that dries fast.

Here’s the truth: the best underwear isn’t about one-size-fits-all. It’s about what you need that day. And luckily, you don’t have to compromise anymore.

Knut made this. He thought the colours might help you choose the right material.