Use size chart below for slightly relaxed fit.
For snug fit, size down.
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Protect Your Balls
• Protect Your Brothers •
$1/pair donated to mens health and veterans. $50,000 total upon sellout.
My go-to-gear!
"This is my go-to-gear for keeping microplastics off my skin. Super comfortable, durable, breathable and comes with a lifetime warranty."
SOLD OUT
BLUE CHIP
LIMITED EDITION
SOLD OUT
GOLD RUSH
LIMITED EDITION
SOLD OUT
MIDNIGHT
UndrDog DuraFlow™ (patent-pending): 51% Hemp, 31% Bamboo, 18% Organic Cotton. No PFAS. No polyester. No microplastics. TriFlow construction: three zones, three natural solutions, zero synthetics anywhere. Not even the waistband. Our lightest DuraFlow™ ever at 140 GSM, in two title-fight colorways: Gold Rush (black, gold thread, gold waistband) and Blue Chip (navy, black thread, black waistband).
- Zero Ride-Up: Perfect leg length plus natural hemp flex. Stays put all day. Zero adjusting.
- Bamboo-Driven Airflow: Cool when it's hot. Dry when it's not.
- Cooling Weave Pouch: 100% breathable organic cotton construction. Keeps the boys off your thighs.
- Zero Synthetics Anywhere: Not the fabric. Not the waistband. Not the pouch. Zero plastic anywhere near your skin.
- Tree Rubber Waistband: Natural rubber from trees. Not petroleum-based synthetic elastic. No other underwear brand does this.
- Non-Toxic: No PFAS. No polyester. No microplastic shedding.
- 2X Bulge Zone: Roomier pouch plus higher GSM up front. More lift. Engineered on purpose. You're welcome.
- Lightest DuraFlow™ Ever: 140 GSM. Our tees are 260–280.
- Stronger Every Wash: Hemp gets tougher over time. That's why we back it forever.
- Holds Shape: Natural rubber outlasts synthetic elastic by years. No sag. No stretch-out.
- Freeballing Comfort: Machine-softened hemp. Commando feel without going commando.
- Naturally Antibacterial: Zero odor at the fiber level. No spray-on coating that washes out.
- Hypoallergenic: Allergy and irritation-free. Nothing synthetic touching your skin.
- Tone-on-Tone Detail: Gold on black. Black on navy. Premium thread, subtle branding, back left only.
- All-Natural: Plant fibers only. No plastic anywhere.
- Versatile: Gym. Work. Sleep. Date night. Fight night.
- No Ride-Up: Perfect leg length plus natural hemp flex means these stay exactly where you put them. All day. No pulling. No adjusting.
- Fit: Supportive where it counts, comfortable everywhere else. Roomier pouch for lift. Looks good on every build.
- For a snug fit, use your usual size. For a relaxed fit, size up. Same fit as 009 COMMANDO.
Name one boxer brief brand with a Lifetime Warranty. We'll save you time. There isn't one. Until now. Rip them. Wear them out. Go twelve rounds in them. We replace them free. Just cover small postage. Hemp gets stronger every wash. Every other brand gives you 30 days. We give you forever, baby.
support@undrdoghemp.com
Use size chart below for slightly relaxed fit.
For snug fit, size down.
Real gold. Real odds.
1 in 100 comes with
A FREE 1g gold bar
1g of .9999 fine gold
Worth ~$200 (based on spot price)
Randomly inserted 1 in 100
Delivered straight in the order package
No purchase necessary, see details below
View Full Terms & Conditions
THE FIRST COMMANDO COLOR DROP
World's Purest Boxers. Lifetime Warranty
Two Pairs. Two Causes. One Ring
Tonight's Card
GOLD RUSH
BLUE CHIP
Every pair fights for men's health.
GOLD RUSH
Worn by the Up-and-Comer, the young fighter with everything to prove.
Gold Rush fights for Movember, the men's mental health foundation.
- Mental health.
- Suicide prevention.
- Prostate and testicular cancer.
The fights most men take on alone, in silence. Movember exists so no man fights them by himself.
BLUE CHIP
Worn by the Veteran, a decorated champion who's seen it all.
Blue Chip fights for Building Homes for our Heroes, serving wounded veterans and service members.
The men who fought for us, and the battles that follow them home.
They didn't stop fighting when the uniform came off.
Neither should we.
$1 from every pair sold goes to that corner's charity
Sell out the arena and that's $50,000 for men's health.
$25,000 in each corner.
YOU'RE IN OUR CORNER.
WE'RE IN YOURS
450,000 men strong. That's not a customer list. That's a brotherhood.
Every pair in this drop backs the fight for men's health.
Mental health. Our veterans.
The stuff men don't talk about enough. Thank you for being here. We mean that.
ZERO SYNTHETICS. ANYWHERE
Nothing hidden. Ever.
Not in the fabric.
Not in the waistband.
Not in the pouch.
Most underwear is up to 90% polyester. That's plastic against your DNA, sixteen hours a day.
The Battle has none. Zero. Anywhere.
DURAFLOW™ TRI-BLEND. PATENT-PENDING
12 months. $300,000. 37 prototypes.
That's what it took to build a clean fabric with a Lifetime Warranty.
51% Hemp
4x stronger than cotton. Every wash tightens it.
31% Bamboo
Airflow at the fiber level. Antimicrobial, no sprays.
18% Organic Cotton
The softness that makes it feel illegal.
Plants, not plastic
TREE RUBBER WAISTBAND
Tapped from a tree.
Not a petroleum lab.
Every other brand uses synthetic elastic. That's plastic.
Ours comes from rubber tree sap. Gold on the Gold Rush. Black on the Blue Chip.
Championship belts, basically.
ZERO RIDE-UP
Twelve rounds. Zero adjusting.
Perfect leg length.
Natural hemp flex that grips without bunching.
Set it and forget it. All day.
COOLING WEAVE POUCH
Breathes downstairs.
100% breathable organic cotton construction. Keeps the boys off your thighs.
All-day airflow below the belt.
No sweat. No itch. No sticking.
2X BULGE ZONE
No hype. It makes your junk look bigger.
Roomier pouch plus double-layer construction up front.
More room
More lift
Engineered on purpose. You're welcome.
Labor Day Special Offer
GOLD RUSH & BLUE CHIP
DRESSED FOR THE MAIN EVENT.
The two best-dressed corners in the building.
Gold Rush
Black with gold thread and a gold waistband. Struts like a champ.
Blue Chip
Deep navy with black thread and a black waistband. Quiet money.
Both in the lightest DuraFlow™ we've ever built. Both backed for life.
Collectors item. First and maybe only run.
WHY ONLY 50,000?
Because a title fight needs a sellout crowd, not an empty arena.
450,000+ UndrDogs.
50,000 pairs. Do the math.
Once they're gone, The Battle goes in the vault. No restocks. No rematch. No pre-orders this time either.
Meet OUR FOUNDER
I Started This Fight for My Family. These 50,000 Pairs Fight for Yours.
My wife Shelby and I tried for a baby for four years. I started digging into why.
What I found: polyester. Microplastics. PFAS. Pressed against skin, leaching into bloodstream, killing sperm. And my first company sold polyester.
When you know better, do better. I shut it down. $300K, 12 months and 37 prototypes later, DuraFlow™ was born. Today Shelby and I have a son, Charlie.
But men's health is bigger than fabric.
It's the stuff we don't say out loud. The brothers we've lost. The veterans still fighting after they come home.
That's why The Battle puts Movember and Building Homes for our Heroes in the corners.
I don't sell fight tickets. I sell boxer briefs. But this card is personal.
Tree Rubber Waistband
Cooling
Weave Pouch
Zero Synthetics.
Anywhere
Tone-on-Tone Branding
2X Bulge Zone
Zero Ride-Up
Hemp/Bamboo/Organic Cotton
THE HEMP & BAMBOO BOXER BRIEFS THAT WENT PRO
Without toxic PFAS ☠️ Forever-Chemicals
No PFAS
No Polyester,
No Microplastics
Breathable
Bamboo-Driven Airflow Where You Need It
Comfortable
Freeballing Comfort.
Zero Ride-Up.
Natural Rubber
Waistband From Trees, Not Petroleum.
Durable AF
Hemp Strength. Gets Stronger Every Wash.
Lifetime Warranty
Buy Once,
Wear For Life
Lifetime Warranty:
Buy Once, Wear For Life
Name one boxer brief brand that offers a Lifetime Warranty?
Exactly. There isn't one. Until now.
Wrong size? Worn out? We replace them. Free.
Just cover small postage to send them back. We’ll send you a brand new pair.
We give you forever, baby!
Customer Reviews
Frequently Asked Questions
I Dare You To Ask…
Who wins The Battle?
Do I have to pick a side?
Are the charities real?
How much of my order actually goes to the charities?
How do these compare to my 009 COMMANDO pair?
Zero synthetics, really? Even the waistband?
Will they actually be comfortable?
What sizes are available?
When does it ship?
Is the gold bar real? How do I know if I won?
Will there be a restock?
Lifetime Warranty, really?
What's UndrDog's big vision?
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