Use size chart below for slightly relaxed fit.
For snug fit, size down.
PageContent
Every Great Fitting Blank Tee Is
Made of Plastic & Chemicals
Go ahead. Check the tag on your favorite tee.
60% Polyester. 70% Polyester.
Sometimes 100%.
Other Internet Brands



Other Internet Brands
Polyester is Plastic. Derived from petroleum.
The same stuff that makes your gas tank run.
That's what's sitting on your skin. All day.
Every day.
The fit is great. The material is garbage.
Cotton? It shrinks. Sags. Smells by noon.
Pick your poison. Or don't.
We found a third option.
I Wanted The
Perfect Fit.
Without The Plastic.
Name’s Chuckie.
I was obsessed with finding the perfect tee.
Great fit. Grips the arms. Hides the gut.
Holds its shape.
I found them. Tons of brands nail the fit.
Then I checked the tags.
Polyester. Polyester. Polyester.
Other Internet Brands
Every. Single. One.
They all use plastic to get that fit.
I didn't think much of it — until my wife and I started trying to have a baby.
Year one. Nothing.
Year two. Nothing.
Doctors. Tests. Treatments.
Heartbreak on repeat.
When you're desperate for answers, you start digging. And I dug deep.
That's when I found out what's actually in our clothes. Our food. Our water.
PFAS. Forever chemicals. Microplastics. Hormone disruptors.
I couldn't undo the years we lost. I couldn't fix everything wrong with modern life.
But I could stop wrapping my body in plastic every single day.
So I decided to solve one thing: the shirt.
No more petroleum on my skin.
No more plastic that traps sweat & sheds microfibers.
What if I could get that perfect fit without plastic?
That’s when I discovered...
Hemp. Earth’s toughest natural fiber.
The Problem
100% hemp feels like cardboard.
The Solution
Blend it with bamboo for INSANE airflow. Add organic cotton for softness.
Everyone told us it was impossible to blend hemp & bamboo.
So we spent over a year in R&D. Blew over $300K.
And created the technology ourselves.
Result: DuraFlow™
51% Hemp
31% Bamboo
18% Organic Cotton
0 PFAS. 0 Polyester. 0 Forever Chemicals
The fit you want. The material you deserve.
Patent-Pending. Plant-Based. Zero Plastic.


We Don't Make Claims.
We Destroy Them.
Fire Test
Polyester melts into toxic goo. UndrDog burns clean like a campfire. One's plastic. One's plants.
Fog Test
Blasted fog under both shirts. Polyester trapped it. Heat stays in. UndrDog? Fog flows straight through.
300% more breathable than cotton.
BB Gun Test
Fired at a balloon inside each shirt. Other shirts? Shredded. UndrDog? Balloon survived.
4x stronger than cotton.
Pool Float Test
Throw it in a pool. While other shirts soak up everything, ours floats. That's DuraFlow™ — it moves moisture out instead of trapping it in. No sweat patches. No stink. No soaked-through look by noon.
Guaranteed for life.
What Happens
When You Wear It

- You put it on.
- Your arms look bigger.
- Your gut looks smaller.
- She notices.
- It's your go-to.
- No pit stains.
- No smell.
- You threw out 2 cotton shirts.
- Washed it 20 times.
- Still perfect.
- You stopped buying shirts.
- Still your favorite.
- Still holding shape.
- You own 15 now.
- You're not going back.

UndrDog Hemp
What's In It
51%
Hemp
Strength. Shape. Won't quit.
31%
Bamboo
Breathes. Wicks. Kills stink.
18%
Organic Cotton
Soft. Comfortable. Done.
0%
Polyester
No plastic.
No synthetics.
No garbage.
Engineered To Make
You Look F’n Sexy
Engineered To Make
You Look F’n Sexy

Arms:
Grips tight. Looks bigger.

Chest: 
Holds shape. No sag.

Gut: 
Hangs loose. Hides the belly.

Hem:
Curved. Makes you look taller.
You look like you lift. Even if you don't.
What We
Obsessed Over

Stitch
Density

Fabric
Drape

Hem
Curvature

Arm
Taper

Stretch
Recovery

Collar
snapback

Chemical
Free Softness

Durability

Airflow
Mesh

Gut
Hiding Fit

Bicep
Grip

Sweat
Resistance

Odor
Prevention

Shape
Retention

Wash
Durability

Result?
A shirt that gives you insane confidence and changes
how you carry yourself.
Why 250,000 Men
Made The Switch
Rated 4.9 | 8200+ Reviews
"My wife's first response was 'I really like that shirt on you.'"
Michael H.
Verified Review
"I'm an electrician. I destroy shirts. This one won't die."
James C.
Verified Review
"Started buying these after my doctor told me to reduce chemical exposure. Now it's all I wear."
Greg M.
Verified Review
"I work in IT but I sweat like I'm pouring concrete. This shirt handles both."
David T
Verified Review
"I'm retired. I've got nothing to prove. But damn this shirt makes me look like I still do."
Larry K, 61
Verified Review
"I now own 12 of these. Not joking."
Anonymous
Verified Review
"Wore it under my vest for 18 months straight. No smell, no wear."
Mike R.
Verified Review
"Florida heat. Outdoor job. Every other shirt is soaked by 10am. Not this one."
Marcus D.
Verified Review
"Thought it was just marketing hype. Wore it one day. Ordered 6 more that night."
Chris W.
Verified Review
Stop Wasting
Money
Old Way
6 shirts/year × $30
=
$180/year

They last 6 months.

Repeat forever.

10 years = $1,800 on garbage.
UndrDog Way
6 shirts × $37
=
$222 Once

They last 30+ years.

10 years = $222

Done
You Save
$1,578
Your "cheap" shirts cost you
$60/year.
A $37 shirt that lasts a lifetime
$1.23/year.
You do the math.
1 in 100 Shirts
Wins Real Gold
-
Not a gimmick.
-
1-gram gold bar. .9999 fine. Worth ~$200.
-
Randomly inserted.
-
You buy a shirt. You might strike gold.
-
Either way, you win.
Lifetime. No BS.
- Rips? We replace it.
- Fades? We replace it.
- Stretches? We replace it.
- Loses shape? We replace it.
Free. For life.
What Happens
When You Wear It
-
Comfortable?
Yes. Soft, breathable, midweight. Not stiff.
-
How is it breathable AND durable?
Hemp = strength. Bamboo = airflow. Together = unstoppable.
-
Will it fit my body type?
We designed it for real men, not mannequins. Hugs where it should. Hides where it needs to.
-
Odor-free?
Bamboo + hemp kill bacteria naturally. No stink.
-
Lifetime warranty - seriously?
Seriously. We replace it free. Forever.
Strong Men Don't
Wear Weak Shirts
You've been settling for garbage.
Shirts that stretch. Sag. Stink. Die.
This one doesn't.
It grips your arms.
Hides your gut.
Lasts decades.
And it's made from plants, not plastic.
You're one of us.

250,000+ men trust it

Lifetime warranty

30-day Moneyback Guarantee

Free shipping on 3+

Patent-pending DuraFlow™

Zero polyester

250,000+ men trust it

Lifetime warranty

30-day Moneyback Guarantee

Free shipping on 3+

Patent-pending DuraFlow™

Zero polyester

250,000+ men trust it

Lifetime warranty

30-day Moneyback Guarantee

Free shipping on 3+

Patent-pending DuraFlow™

Zero polyester

250,000+ men trust it

Lifetime warranty

30-day Moneyback Guarantee

Free shipping on 3+

Patent-pending DuraFlow™

Zero polyester
“Hemp is legit! Insanely breathable, soft, durable, and somehow hides my gut” - Daryn T.
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 fibres–No plastic
- Comfort Level: High comfort that lasts
- Fade-Resistant: Holds color, no fading
- Affordable: Out lasts 10 ordinary tees
- Sun-Safe: Natural UV protection
- Hypoallergenic: Allergy & irritation-free
- 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.
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.
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.
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.
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?

No more petroleum on my skin.
1 in 100 Wins a Real Gold Bar






