Use size chart below for slightly relaxed fit.
For snug fit, size down.

Size Chart

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Crew

Earth’s Greatest Fitting Black Tee

THE HEMP & BAMBOO BREATHABLE TEE THAT LASTS LONGER THAN YOUR MORTGAGE

Without toxic PFAS ☠️ Forever-Chemicals

Main Hero Image Main Hero Image
Trusted by 250,000 Men
See Memorial Day Sale
Lifetime Warranty
Buy 3 = Free Shipping
Microplastics

No PFAS

No Polyester, No Microplastics

Insane Airflow

Breathable

Bamboo's Superpower

Comfortable

Comfortable

Satisfyingly Soft

Alpha Fit

Hides Gut

Grips High, Loose Below

Plant

Durable AF

Hemp Strength

Lifetime Warranty

Lifetime Warranty

Buy Once, Wear for Life

The Unsung Heroes of My Wardrobe

Let’s talk about the champion of my closet: UndrDog hemp T-shirts. These tees don’t just raise the bar—they are the bar. The hype’s real! I have seven black in rotation and not a single regret!

- Michael H.

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

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Other Internet Brands

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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.

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Other Internet Brands

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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.

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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.

  • imgNo more petroleum on my skin.
  • imgNo 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.

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The Problem

100% hemp feels like cardboard.

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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

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51% Hemp

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31% Bamboo

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18% Organic Cotton

0 PFAS. 0 Polyester. 0 Forever Chemicals

The fit you want. The material you deserve.

Patent-Pending. Plant-Based. Zero Plastic.

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We Don't Just Make Claims.
We Destroy Them.

Test 1

Fog Machine Airflow Test

We blasted fog under both tees to see which one breathes.

UndrDog? Fog flows straight through like a breeze.

Poly shirts? Fog chokes, clogs, and gets trapped.

More airflow = less sweat, less stink, more comfort.

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Test 2

Fire

We lit up two tees — Polyester vs UndrDog.

Poly? It’s just plastic. It curled, melted, and dripped like toxic candle wax that smelt like poison.

UndrDog? Burned naturally and smelt like a campfire. No plastic-poison toxic smell!

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Test 3

BB Gun Test

We loaded a balloon inside, lined up the shot, and pulled the trigger.

Other shirts shred. UndrDog holds.

Balloon intact. Tee still looks f’ing great.

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Test 4

Bow & Arrow

We fired an arrow at a polyester shirt and an UndrDog tee.

Polyester? Fly right through it like butter.

UndrDog? Took the hit. Bounced off from Hemp’s durability. Strongest fibers on earth. Shirt still flexing.

Test 5

Knife Drop Test

We stuffed a balloon inside our tee and dropped a kitchen knife from 3 feet.

Other shirts? Pop.

Ours? Balloon lives.

Tap for sound 🔊
Test 6

Pool Float Test

We tossed it in a pool next to a cotton tee.

UndrDog floats 3x longer, absorbing 300% less water.

Why it matters: Less sweat, less stink, less cling.

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Test 7

Gym Test

We handed it to the strongest guys we know and said, “Go ahead... rip it.”

Nº rips. Nº stretch. Just frustrated bodybuilders.

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Test 8

100+ Wash Test

Washed. Dried. Beat up. Repeated 100 times.

Nº fade. Nº sag. Nº shrink.

Still hugs the arms and hides the gut like day one.

The Verdict?

UndrDog isn’t just a shirt. It’s a weapon-grade textile.

Trusted by 250,000 Men

What Happens
When You Wear It

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line
iconDay 1
  • You put it on.
  • Your arms look bigger.
  • Your gut looks smaller.
  • She notices.
iconWeek 1
  • It's your go-to.
  • No pit stains.
  • No smell.
  • You threw out 2 cotton shirts.
iconMonth 1
  • Washed it 20 times.
  • Still perfect.
  • You stopped buying shirts.
iconYear 1+
  • Still your favorite.
  • Still holding shape.
  • You own 15 now.
  • You're not going back.
line
  • icn1 in 100 Wins a Real Gold Bar

UndrDog Hemp
What's In It

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icn

51%

Hemp

Strength. Shape. Won't quit.

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31%

Bamboo

Breathes. Wicks. Kills stink.

icn

18%

Organic Cotton

Soft. Comfortable. Done.

icn

0%

Polyester

No plastic.
No synthetics.
No garbage.

Engineered To Make
You Look Fn Sexy

Engineered To Make
You Look Fn Sexy

icn

Arms: line line

Grips tight. Looks bigger.

icn

Chest: line

Holds shape. No sag.

icn

Gut: line

Hangs loose. Hides the belly.

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Hem: line line

Curved. Makes you look taller.

You look like you lift. Even if you don't.

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What We
Obsessed Over

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Stitch
Density

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Fabric
Drape

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Hem
Curvature

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Arm
Taper

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Stretch
Recovery

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Collar
snapback

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Chemical
Free Softness

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Durability

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Airflow
Mesh

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Gut
Hiding Fit

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Bicep
Grip

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Sweat
Resistance

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Odor
Prevention

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Shape
Retention

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Wash
Durability

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Result?

A shirt that gives you insane confidence and changes
how you carry yourself.

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Why 250,000 Men
Made The Switch

star

Rated 4.9 | 8200+ Reviews

quote
star

"My wife's first response was 'I really like that shirt on you.'"

Michael H. icnVerified Review

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star

"I'm an electrician. I destroy shirts. This one won't die."

James C. icnVerified Review

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star

"Started buying these after my doctor told me to reduce chemical exposure. Now it's all I wear."

Greg M. icnVerified Review

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star

"I work in IT but I sweat like I'm pouring concrete. This shirt handles both."

David T icnVerified Review

quote
star

"I'm retired. I've got nothing to prove. But damn this shirt makes me look like I still do."

Larry K, 61 icnVerified Review

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star

"I now own 12 of these. Not joking."

Anonymous icnVerified Review

quote
star

"Wore it under my vest for 18 months straight. No smell, no wear."

Mike R. icnVerified Review

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star

"Florida heat. Outdoor job. Every other shirt is soaked by 10am. Not this one."

Marcus D. icnVerified Review

quote
star

"Thought it was just marketing hype. Wore it one day. Ordered 6 more that night."

Chris W. icnVerified Review

Stop Wasting
Money

Old Way

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6 shirts/year × $30

=

$180/year

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    They last 6 months.

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    Repeat forever.

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    10 years = $1,800 on garbage.

UndrDog Way

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6 shirts × $37

=

$222 Once

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    They last 30+ years.

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    10 years = $222

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    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.

FREE GOLD BAR

With 1 in 100 tees

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.

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  • icn1 in 100 Wins a Real Gold Bar
  • 100,000+ men trust it

  • Lifetime warranty

  • 30-day Moneyback Guarantee

  • Free shipping on 3+

  • Patent-pending DuraFlow™

  • Zero polyester

  • 100,000+ men trust it

  • Lifetime warranty

  • 30-day Moneyback Guarantee

  • Free shipping on 3+

  • Patent-pending DuraFlow™

  • Zero polyester

  • 100,000+ men trust it

  • Lifetime warranty

  • 30-day Moneyback Guarantee

  • Free shipping on 3+

  • Patent-pending DuraFlow™

  • Zero polyester

  • 100,000+ men trust it

  • Lifetime warranty

  • 30-day Moneyback Guarantee

  • Free shipping on 3+

  • Patent-pending DuraFlow™

  • Zero polyester

MEMORIAL DAY SPECIAL OFFER

EARTH’S LIFETIME TEE:

HEMP. BAMBOO. NO PFAS. GRIPS ARMS. HIDES GUT.

EARTH’S LIFETIME TEE:

HEMP. BAMBOO. NO PFAS. GRIPS ARMS. HIDES GUT.

Hemp is legit! Insanely breathable, soft, durable, and somehow hides my gut” - Daryn T.

1 in 100 Gets Free Gold Bar
Choose Your Size:
Snug fit = usual size, relaxed fit = size up
MEMORIAL DAY SPECIAL OFFER
Select Pack:
1 in 100 wins a gold bar
🎉 Memorial Day Sale Savings auto-applied.

Pre-order your UndrDog Hemp to get the next available batch. Next batch ships:

April 17 SOLD OUT
May 15 92% SOLD
June 26 0% SOLD
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: Out lasts 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.

Size Chart

Real gold. Real odds.

1 in 100 comes with
A FREE 1g gold bar

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?

Trusted by 250,000 Men
Become An UndrDog
Lifetime Warranty
Buy 3 = Free Shipping