Men's underwear · founding drop
PRVEN

Talk is cheap. Prove it.

The underwear that settles the debate and the proof is built right in. Comfortable enough to live in, cheeky enough to start something.

Claim your spot →
No spam · First dibs · You tell us which one you want
How it all started

Three friends and a bachelor party.

Somewhere between the third round and a decision we'd all regret by sunrise, the conversation drifted where it always does: the wedding, the honeymoon, and whether the groom could actually back up the legend he'd been selling since freshman year.

Talk was big. Claims were bigger. And then someone said the four words no one dare dodge in a room full of the boys: "Alright then, prove it."

We needed a way to settle it once and for all. Half-laughing, half-serious, we invented one. A little proof, sewn right into the REAL place a man's word is tested.

For every bachelor party, every college dorm, every fellas' night that ends in bold claims… it's time to prove it.
The idea

Proof, built in.

Extremely comfortable, genuinely good-looking boxer briefs, but with the proof built right in. There are four ways we could build that proof, from pure printed flex to a real pull-out ruler. We'd like your help deciding how to finish the build. Check out the demos and tell us what you like most.

  • 01Actually comfortable. Soft, stretchy, holds its shape. The pair you reach for first, not the gag gift buried in a drawer.
  • 02The proof we've been waiting for. Four mechanisms to choose from, from an all-bit printed ruler to a functional pull-out. The whole point of this page is to find out which one to build.
  • 03Made to be shared. Built for the story, the group chat, the "you did NOT just buy those." We will even share it in two packs.
  • 04Fellas-first! Bachelor parties, dorm gifts, white-elephant slam dunks, and the guy who won't stop talking. You know him. Gift accordingly.
PROOVEN boxer brief mockup, red colorway
Early mockup · “The Print” style · tap a colorway
Give us a hand and look them over

Pick the one we build.

Four ways to build the proof into the underwear. We're not guessing which one to design; we want your input. Read them, then cast your vote in the form below. Feel free to ask questions or add ideas.

Option 01
🎭

The Print

A ruler printed straight down the leg. You can't actually measure with it, but you could confirm a liar. Pure printed audacity.

all bitmeasures: nopecheapest
Option 02
🔧

The Peel

A branded ruler velcroed to the waistband. Rip it off in the moment of truth. You can wield a real, functional ruler.

bit + it worksvelcroremovable
Option 03
📏

The Slider

A slim side pocket with a branded ruler tucked inside. Slide it out when proof is demanded; stash it away for the next challenger. Confidence you can wear.

reusablehidden pocketfunctional
Option 04
🪢

The Ripcord

A branded measuring line wrapped around your waist in the waistband. Pull to deploy an alarming length of line; we know you've got it. Discreet until it isn't.

built-innot intrusiveunhinged
Founding list

Stand with us from day one.

Drop your email, tell us which one you love, and what it's worth to you. No spam, just a heads-up when the first drop is ready. Your vote will determine what we design.

We'll only email you about PROOVEN. Prove-it energy only.

PRVEN

You're on the list. Now do us a favor and send this to the one guy who needs it most.

Spread it

Know a guy?

You definitely know a guy. Send him this. The sooner we hit critical mass, the sooner these exist.