Chuckie spent years building what he thought was the world's toughest tee. First version: hemp-polyester. Strong - but loaded with PFAS.
Use size chart below for slightly relaxed fit.
For snug fit, size down.
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PATENT-PENDING DURAFLOW™ TECHNOLOGY
THE LAST TEE
YOU'LL EVER BUY
Made from hemp, bamboo & organic cotton. Zero polyester. Zero PFAS. Zero microplastics.
Built to last a lifetime - and backed by one.
★★★★★
Trusted by 250,000 Men
TRY IT RISK FREE
Lifetime Warranty
Buy 3 = Free Shipping
"I now own 12 of these. Nothing else comes close."
THE PROBLEM NO ONE TALKS ABOUT
THE TEE YOU
WEAR EVERY DAY?
IT'S MADE
OF PLASTIC
And it's doing more damage than you think.
Every wash. Every wear. Every day.
POLYESTER = PETROLEUM PLASTIC
60–90% of "premium" men's tees are polyester - petroleum-derived plastic. Different logos. Same cheap plastic. You wear it 16 hours a day.
SHEDS MICROPLASTICS EVERY WASH
Every wash releases hundreds of thousands of plastic particles. Scientists are finding microplastics in places every man should know about.
BUILT TO FAIL. ON PURPOSE
Cotton sags. Polyester stinks. Both fall apart in 6–12 months by design. That's how they keep you buying $150–$200/year. Forever.
THE ORIGIN STORY
HE BUILT SOMETHING TOXIC. THEN BURNED IT DOWN.
THE ORIGIN STORY
HE BUILT SOMETHING TOXIC. THEN BURNED IT DOWN.
Then he and his wife Shelby started trying to start a family. He went deep into research on male fertility. That's when he found the studies.
"Microplastics. PFAS. Endocrine disruptors. The research was undeniable. I was literally selling men a shirt that could be working against them. So I burned the whole thing down and started over."
Chuckie, Founder of UndrDog Hemp
Almost a year and $300,000 later - UndrDog was rebuilt from scratch. Hemp. Bamboo. Organic cotton. Zero polyester. Zero shortcuts.
WHAT THE RESEARCH SHOWS
SCIENTISTS
ARE FINDING MICROPLASTICS
IN PLACES MEN DON'T WANT THEM
HUMAN TESTS
2024Scientists detected microplastics - including polyester-derived PET - inside every human testicle they tested.
Zhang et al. (2024) / PubMed ID 38745431
HUMAN BRAIN TISSUE
2025Early research in Nature Medicine detected microplastics - including polyester-type PET - in human brain tissue samples.
Britt et al. (2025) / Nature Medicine
CARDIOVASCULAR
2024Research found micro- and nanoplastics in human artery plaques, associated with higher incidence of heart attack, stroke, and death.
Marfella et al. (2024) / PubMed PMID 38426974
THE TECHNOLOGY
PATENT-PENDING DURAFLOW™
Not a coating. Not a gimmick. Built into the structure of the fiber itself - permanent.
51%
HEMP
Earth's strongest natural fiber. 4x stronger than cotton. Holds shape for life.
31%
BAMBOO
Micro-gap structure creates constant natural airflow. Wicks sweat. Natural antimicrobial - odor never sticks.
18%
COTTON
Chemical-free softness. No PFAS. No coatings. Feels like a man-hug - gets better after every wash.
Doesn't Rip. Doesn't Stretch.
Hemp's tensile strength survives job sites, gym sessions, and years of washing without losing shape.
No Sweat Pits. No Stink.
Bamboo's provides micro gaps + it's natural properties.
Gets Softer with Every Wash
DuraFlow™ fibers soften over time while maintaining structural strength - unlike polyester which sheds.
Zero Microplastic Shedding
100% plant-based. Zero petroleum. Zero synthetic fibers. Zero plastic released in the wash - ever.
WHAT WE
OBSESSED OVER
OBSESSED OVER
Every detail engineered so an
average build looks solid.
Nothing left to chance.
Stitch Density
Fabric Drape
Hem Curvature
Arm Taper
Stretch Recovery
Collar Snapback
Chemical Free
Durability
Airflow Mesh
Gut Hiding Fit
Odor Prevention
Wash Durability
RESULT?
A shirt that gives you insane confidence and changes how you carry yourself.
PROOF
WE DON'T MAKE CLAIMS. WE DESTROY THEM
We put UndrDog through tests other brands wouldn't dare try.
Here's what happened.
TEST 1
Fire Test
Polyester melts into toxic goo.
UndrDog burns clean like a campfire.
One's plastic. One's plants.
TEST 2
Fog Test
Blasted fog under both shirts.
Polyester trapped it.
Heat stays in. UndrDog? Fog flows straight through.
300% more breathable than cotton.
TEST 3
BB Gun Test
Fired at a balloon inside each shirt.
Other shirts? Shredded. UndrDog? Balloon survived.
4x stronger than cotton.
TEST 4
Pool Float Test
Throw it in a pool. While other shirts soak up everything, ours floats.
DuraFlow™ moves moisture out instead of trapping it.
No sweat patches. No stink. No soaked-through look by noon.
Guaranteed for life.
THE CUT
BUILT FOR REAL MEN
NOT MODELS
We engineered the Alpha Frame™ so an average build looks solid. Grips where it should. Hides where it should.
1
Arms & Chest: Hugs Close
Makes arms look bigger, chest look fuller.
2
Midsection: Slightly Looser
Hides the gut and man-boobs without looking like a tent.
3
Curved Hem
Adds visual height and proportion. Clean tucked or untucked.
4
Midweight Fabric
Holds shape all day. No saggy mess by 3 PM.
HEAD TO HEAD
EVERY INTERNET TEE BRAND
VS. UNDRDOG HEMP
Check the tag. It's all polyester. Different logo. Same plastic.
|
EVERY INTERNET TEE | |
|---|---|---|
| Material | Hemp • Bamboo • Organic Cotton | Polyester (petroleum plastic) |
| Plastic on Skin | Zero. None. | 60–90% plastic fibers |
| PFAS / Toxic Chemicals | Zero | ✗ Extremely common |
| Microplastic Shedding | None — ever | ✗ Every single wash |
| Breathability | DuraFlow™ Natural Airflow | ✗ Synthetic wicking only |
| Odor Resistance | Natural antimicrobial | ✗ Bacteria clings to plastic |
| Durability | Lifetime Warranty | ✗ 6–18 months |
| Fit Design | Alpha Frame™ for real men | Built for the model |
| 5-Year Cost | $38 (once) | $420–$750 |
| Guarantee | Lifetime. No exceptions. | 30 days. Maybe. |
A CHANCE TO WIN
BUY A TEE WIN ACTUAL GOLD
1 in 100 contains a real gold bar
Every UndrDog order ships with a chance. Literally 1 in 100 packages contains a real gold bar. Not a voucher. Not a coupon code. Physical gold - right inside your package.
REAL MEN. REAL REVIEWS.
3,640+
VERIFIED BUYERS ALREADY SWITCHED
VERIFIED BUYERS ALREADY SWITCHED
"The Search Is Finally Over"
"I've been looking 5 years for a shirt that fits right and lasts. This is it. Done. I now own 8 of them and that number's going up."
"My Wife Stopped and Stared"
"Put it on and my wife said 'I really like that shirt on you.' Completely unsolicited. Enough said. Buying more."
"Two Years on a Job Site"
"Wore this for two years through concrete dust, summer heat, rain, and sweat. Still looks like I just pulled it off the shelf."
"Wore It for Murph Under a Vest"
"First time wearing it: the Murph workout under a 24 lb vest. Not a single smell. Not a single stretch. The shirt survived better than I did."
"Bought 12. That's Not a Typo."
"Started skeptical with one. Then 3. Then 6. I now have 12. My wife thinks I've lost my mind. I've just stopped throwing away shirts."
"Hides the Gut. Sold."
"Most shirts hug my gut like a sausage or hang like a tent. This one hugs the chest, hides the middle. First shirt I've felt confident in for years."
Showing 6 of
3,640+ verified 5-star reviews
— 4.9★ average.
— 4.9★ average.
$38 Once.
Or $750.
Your Call.
The "Normal Tee" — 5-Year Cost
Average tee spend per year
$80–$150/yr
Average lifespan
6–12 months
Total over 5 years
$400–$750
Total Wasted
$420–$750
One UndrDog Tee = $38
Backed by a lifetime warranty. Rips, stretches, fades, loses shape - we replace it free.
That's About $0.02 Per Day
Over 5 years, one UndrDog tee runs 2 cents per day. The premium tee you replaced it with? $0.40/day.
Best Case: Never Buy a Tee Again
Men who buy UndrDog don't come back because theirs wore out. They come back for more colors.
Buy Once.
Wear for Life.
Really.
If your UndrDog tee ever rips, stretches, shrinks, fades, or stops performing - we replace it. Free.
No questions asked. No expiration date. No fine print.
Worst case: you don't love it and we make it right. Best case: you never think about buying a tee again.
MEMORIAL DAY
SPECIAL OFFER
“Hemp is legit! Insanely breathable, soft, durable, and somehow hides my gut” - Daryn T.
1 in 100 Gets Free Gold Bar
Buy 3+ for FREE Shipping
Lifetime Warranty
Material
UnderDog Hemp: 51% Hemp, 31% Bamboo, 18% Organic Cotton
No PFAS, microplastics or cancerous chemicals.
Crafted with DuraFlow™ tech - blends hemp’s strength and bamboo’s breathability into a satisfying forever-shirt without forever-chemicals.
- Weight: Midweight comfort with max airflow
- Stronger Wear: 4x stronger than cotton
- Super Breathable: Stay cool with Bamboo airflow
- Moisture-Wicking: Draws sweat, stay dry
- Holds Shape: No sag or stretch for 30 years
- Wrinkle-Resistant: Easy low maintenance
- Eco-Smart: All natural fibers–No plastic
- Comfort Level: High comfort that lasts
- Fade-Resistant: Holds color, no fading
- Affordable: Outlasts 10 ordinary tees
- Sun-Safe: Natural UV protection
- Hypoallergenic: Allergy & irritation-free
Size & Fit
- Fit: Perfectly tight on the arms and chest, loose around the gut. Look jacked regardless of your size.
- For a slightly relaxed fit, we recommend using your usual size. For a snug fit, size down.
Washing
Just wash and dry it like any other shirt—no special care needed. The fabric's durability and shape retention stay strong, even after multiple washes and machine drying on low heat.
Lifetime UndrDog Warranty
Don’t like the fit? Don’t like the material? Simply contact support@undrdoghemp.com for an easy return. Unmatched Lifetime Warranty. Yep… we’re that cocky confident.
Are There Other Colors? How does UndrDog Work?
This is “Project 001: Midnight”. The only project available to the public. It’s UndrDogs’ Coat-of-Arms. After purchase, you’ll join thousands in the Undrdog collective with unlocked access to future ‘limited edition’ projects (different colors, styles, designs, etc).
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
Customer Reviews
Frequently Asked Questions
I Dare You To Ask…
Will it be comfy?
How can it be breathable AND durable?
What makes it odor/stink free?
Just normal washing?
What's so unique about DuraFlow™?
Why use hemp, bamboo, and cotton?
Lifetime warranty—really?
What makes it wrinkle-free?
How sustainable is this shirt?
What’s UndrDog’s big vision?
Your Privacy Choices |
