AirFlow Trunk 3.6″ Open Fly 1
AirFlow Trunk 3.6″ Open Fly 2
AirFlow Trunk 3.6″ Open Fly 3
4.982 Verified Reviews
AirFlow Trunk 3.6″ Open Fly — 3-Pack

The pouch makes room. The mesh lets it breathe.

Room in front, air through the mesh, nothing extra on your legs.

First Order Guarantee
First Order Guarantee
Not satisfied? We’ll make it right. No return required.
Free Shipping & Returns:
On all orders $80+
Estimated Delivery:
10–14 business days
Why it breathes

Mesh only breathes when there’s room behind it.

Flat underwear presses mesh shut against your skin. AirFlow is built in two parts: a pouch that makes the room, and mesh that lets it breathe.

Regular underwear
Regular underwear
Flat front, pressed shut. No room, so nothing to air out.
AirFlow Trunk 3.6″
AirFlow Trunk 3.6″
A pouch that makes room, and mesh where that room is.
Makes the room
Part 1 · The pouch
Makes the room
Holds everything forward and apart, off your thighs.
Lets it breathe
Part 2 · The mesh
Lets it breathe
In the crotch and inside the pouch, where the room is.
Pouch without mesh: room, but stuffy.
Mesh without a pouch: nothing to air out.

AirFlow is both, in one garment.

AirFlow Trunk 3.6″ Open Fly

“AirFlow Trunk 3.6" are genuinely comfortable in keeping my testicles away from my legs and providing a cool sensation. The only enhancement I would appreciate is a larger hanging compartment for my penis. Apart from that, I anticipate purchasing more of these in the future.”

Heath C.Verified buyer

Comfort you notice when you stop thinking about it.

AirFlow keeps the fit light, ventilated, and naturally supported through work, movement, workouts, and warm days.

Less Heat When You Move
Mesh panels help air circulate when your day starts running hotter.
Less Stick & Rub
Anatomical separation helps keep everything off your body and away from your legs.
Support That Stays Light
The pouch keeps everything naturally supported without adding bulk.
Room Without Bagginess
Space in front, no loose fabric to bunch.

“Wasn't sure about the shorter inseam but I'm glad I tried them. They don't roll or bunch under jeans and the fabric keeps things dry even on hot days.”

Thomas M.Verified buyer
Why 3.6″

Short on purpose.

3.6″ removes extra fabric from around your legs, so the trunk stays light and the airflow isn’t buried under a long leg.

Short on purpose.
Under shorts and gym kit
Nothing hangs below the hem of running or work shorts.
Hot days
Less fabric on your legs, more air around them.
Less to bunch
A short leg has less to gather under jeans.
The air perforation was the main reason.
An AirFlow buyer, customer interview.

“The shorter leg is perfect under my work shorts. They don't ride up, even when I'm climbing in and out of the truck all day. Fabric feels smooth and keeps me from overheating.”

Donald H.Verified buyer
Thighs rub?
If you want fabric between your thighs, there is a longer cut: same pouch, same mesh, 7.6″ leg.
See the AirFlow Boxer Brief 7.6″ →
Sit. Walk. Work. Move.

Sit. Walk. Work. Move.

AirFlow stays in place without making you constantly readjust.

Flat Seams
Less friction against skin.
Quick-Dry Comfort
Built for warm days and movement.
Built to Last
Everyday performance, wash after wash.
Stay-Put Waistband
Secure without squeezing or rolling.
First Order Guarantee

“Super breathable boxers. I work long shifts on my feet and these keep everything cool and in place. Open fly works fine and the waistband doesn't dig in at all.”

Caleb J.Verified buyer

Soft where it touches. Open where it counts.

Smooth and light against your skin, with stretch that moves when you do, and breathable mesh exactly where you need air.

OEKO-TEX® STANDARD 100
certified fabric
Stretches
as you move
Air where
you need it
Never
stays damp
Lies flat,
never digs in
Soft where it touches. Open where it counts.

“Really like this pair. The shorter leg works great under my running shorts and the fly is easy to use. Black color hasn't faded after a bunch of washes.”

Luke G.Verified buyer
AirFlow Trunk 3.6″ Open Fly
4.9 · reviews
AirFlow Trunk 3.6″ Open Fly — 3-Pack
$84.00
Pack3-Pack
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SizeChoose your size
Quantity
1
First Order Guarantee — claim within 30 days
Thighs rub? → AirFlow Boxer Brief 7.6"
AirFlow Trunk 3.6″ Open Fly
AirFlow Trunk 3.6″ Open Fly — 3-Pack
$84.00
1