Let’s just say it, because somebody has to and apparently it’s me: no, you don’t wear underwear under cycling shorts. Yes, this feels wrong the first time. No, you will not be arrested.

I’m answering this one directly and unglamorously because I remember standing in a changing room, fully kitted, deeply confused, googling this exact question on my phone while pretending to check the weather.

Why You Don’t Wear Underwear Under Cycling Shorts

Cycling shorts pair a padded insert — called a chamois (pronounced “shammy,” not “cham-wah,” learn this before you say it wrong in front of someone) — with a flat, seamless fabric that sits directly against your skin. Underwear adds seams, bunching, and extra fabric exactly where you need none of those things, for hours, while moving. The chamois has one job: reducing friction and pressure where you sit. Underwear undoes that job.

But It Feels Wrong with no underwear under cycling shorts

It does, for about two rides. Then it feels completely normal and you’ll forget anyone ever questioned it. Cycling shorts are tighter and more structured than regular underwear-requiring clothes — that’s part of what makes this work. They’re snug enough that they don’t need a layer underneath.

What Actually Matters More Than the Underwear Question

Size. Too loose and the chamois moves around, causing more friction, not less. Cycling shorts should feel snug, almost compression-tight.

Chamois cream. Yes, it’s a real product, yes, a lot of people use it, no, it’s not embarrassing to buy. It reduces friction further, especially on longer rides.

Washing them properly. Inside out, after every ride, no fabric softener (it breaks down the moisture-wicking fabric). Wearing the same chamois twice without washing it is asking for trouble.

Saddle, not shorts, is often the real problem. If you’re still in pain after good shorts and proper sizing, the saddle itself might be wrong for your anatomy. More on that in our bike fit post.

Cycling Shorts Etiquette Nobody Explains to Beginners

If your shorts have a built-in chamois (almost all proper cycling shorts do), you wear them solo — no liner, no underwear, full stop. If you’re wearing loose mountain-bike-style shorts over a padded liner short, the liner is the “underwear” in that scenario — you still don’t double up.

It’s a small, slightly funny rule that everyone in cycling just silently agrees to never explain to newcomers. Consider it explained. You’re welcome, and also, no, nobody can tell from the outside.