Men's underwear · founding drop
PRVEN

Talk is cheap. Prove it.

The underwear that settles the debate — with a little proof built right in. Comfortable enough to live in, cheeky enough to start something.

Claim your spot →
No spam · first dibs · you pick which one we build
How it started

Three friends. One bachelor party.

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

Talk got big. Claims got bigger. And then someone said the four words no man can dodge in a room full of his boys: "Alright — prove it."

They needed a way to settle it once and for all. Half-laughing, half-serious, they invented one. A little proof, sewn right into the one place a man's word gets 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.

Genuinely comfortable, genuinely good-looking boxer briefs — 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 haven't picked one. You do that, below.

  • 01Actually comfortable. Soft, stretchy, holds its shape — the pair you reach for first, not the gag gift buried in a drawer.
  • 02The proof — your way. Four different mechanisms, from an all-bit printed ruler to a functional pull-out one. 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." That's the whole point.
  • 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
This is the whole point

Pick the one we build.

Four ways to build the proof into the underwear. We're not guessing which one to make — we're building whatever you vote for. Read them, then cast your vote in the form below.

Option 01
🎭

The Print

A ruler printed straight down the leg. You can't actually measure with it — that's the joke. 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 — now it's 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, slide it back after. Discreet until it isn't.

reusablehidden pocketfunctional
Option 04
🪢

The Ripcord

A branded measuring line coiled inside the liner, anchored at the waistband. Pull to deploy an alarming length of line — but it never fully escapes. No numbers. Pure chaos.

built-inno notchesunhinged
Founding list

Get first dibs.

Drop your email, tell us which one to build, and what it's worth to you. No spam — just a heads-up when the first drop is ready, and your vote actually steers what we make.

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.