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AirFlow Trunks 3.6″ Open Fly 1
AirFlow Trunks 3.6″ Open Fly 2
AirFlow Trunks 3.6″ Open Fly 3
AirFlow Trunks 3.6″ Open Fly 4
AirFlow Trunks 3.6″ Open Fly 5
4.990+ Verified Reviews
AirFlow Trunks 3.6″ Open Fly

Anatomical Support That Lets Everything Breathe.

A lighter anatomical trunk with breathable mesh zones and a pouch that keeps everything naturally separated, supported, and cooler.

$26.00
First Pair Guarantee
First Pair Guarantee:
Not satisfied? We’ll make it right. No return required.
Free Shipping & Returns:
On all orders over $80.
Fast Delivery:
Ships within 10–14 business days.

Regular Underwear Is Flat. Male Anatomy Is Not

More airflow, better separation, and the coverage that feels right for how you move.

Regular underwear
Regular underwear
Flat front. Heat builds up.
Airflow Trunks
Airflow Trunks 3.6″ Open Fly
Anatomical pouch. Breathable mesh. Two coverage options.
4.990+ Verified Reviews

Men Notice the Difference Fast.

Cooler, lighter, easier to wear.

Travis H.
08.03.2026

Way cooler through long days. The mesh makes a noticeable difference without losing support.

Samantha C.
11.03.2026

Shorter and lighter than his briefs, but nothing rides up. Exactly what he wanted for summer.

Marcus D.
15.03.2026

The open fly is actually useful, and the mesh keeps things fresh through a full shift on my feet.

First Pair Guarantee

Airflow Isn’t an Extra. It’s the Difference.

Use the adjustable outer tab to fine-tune room, lift, and hold without changing underwear styles.

Anatomical pouch
ANATOMICAL POUCH
More Separation
AIRFLOW MESH
More Lift
Airflow mesh
3.6 trunk cut
3.6″ TRUNK CUT
Less Fabric. Less Bulk.

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.
AirFlow Trunks 3.6″ Open Fly
Thermal view — cooler where it matters

About 1.5°F Cooler Where It Matters.

Sit. Walk. Work. Move. AirFlow stays in place without making you constantly readjust.

Flat Seams
Helps heat and moisture move out.
Quick-Dry Comfort
Built for warm days and movement.
Odor-Resistant Finish
Stays fresher through the day.
Built to Last
Everyday performance, wash after wash.
First Pair Guarantee
AirFlow Trunks front

Shorter Cut. Lighter Feel.

A shorter trunk cut for men who want lighter coverage without giving up anatomical support.

Open Fly Access
Easy access when you need it, without shifting the fit.
Breathable Mesh Zones
More ventilation where heat builds up.
Flat Seams
Less friction against skin.
Stay-Put Waistband
Secure without squeezing or rolling.

Soft Stretch Cotton. Easy Everyday Care.

95% cotton, 5% elastane. Breathable comfort with everyday stretch.

Moves
with you
Breathable
mesh zones
Quick-dry
comfort
Stay-put
waistband
OEKO-TEX® STANDARD 100
certified fabric
4.990+ Verified Reviews

Find the Fit That Works for You.

Choose your size, adjust the pouch to your preference, and get 15% off your first AirFlow pair.

AirFlow Trunks 3.6″ Open Fly
4.9·90+ reviews
AirFlow Trunks 3.6″ Open Fly
$26.00
Color
Size
Quantity
1
AirFlow Trunks 3.6″ Open Fly
AirFlow Trunks 3.6″ Open Fly
$26.00
1
Size Guide
How to measure
Size Chart — Body Measurements
Between sizes? Size up for more room, down for a tighter hold.