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

Size Chart

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Earth's Revenge on Microplastics

  • No PFAS
  • No Pesticides
  • No Forever Chemicals
  • No Synthetic Materials
  • No Polyester
  • No Nylon
  • No PFAS
  • No Pesticides
  • No Polyester
  • No Forever Chemicals
  • No Synthetic Materials
  • No Nylon

The Black Tee For
Men Who

Give a Sh*t
Know Their Worth
Never Settle
Have Common Sense
Love Quality Over Crap
Lift Heavy Things
Live With Integrity
Protect Loved Ones
Give a Sh*t
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9 REASONS WHY
UndrDog Hemp
Is The
Most ELITE Shirt Made

Reason #1

Better for Your Manhood Avoid Shrinkage

Protect your boys from harmful chemicals and shrinkage caused by leaching microplastics from polyester shirts.

  • PFAS chemicals are linked to male genital shrinkage & fertility issues.
  • 99% of men have microplastics in their blood, harming respiratory health.
  • 50% of men’s lungs show microplastic buildup, harming respiratory health.
  • 60% of men have microplastics in their semen, reducing sperm count.
  • Microplastics in brain tissue are linked to memory loss & cognitive decline.
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Reason #2

Better for Your Health

Breathe Easy With
No Microplastic Junk In
Your Trunk

Our PFAS-free hemp tees keeps your skin
toxin-free and your body thriving without
plastic exposure.

Statistic

You’re ingesting microplastics every week, equalling the weight of a credit card

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Reason #3

Better For The Planet

Stop Wearing Pollution

The fast-fashion cotton & polyester industry is the 3rd largest contributor to global pollution.
Go hemp / bamboo guilt-free!

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Polyester

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Earth (Landfill)

Polyester takes 500+ years to decompose & is the top source of landfill microplastics.

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Water (Pollution)

Each polyester shirt wash dumps 700,000+ microfibers into our oceans.

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Air (Emissions)

One polyester shirt pollutes the air
like a 20 mile drive.

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UndrDog Hemp

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Earth (Landfill)

UndrDog Hemp breaks down in 6 months with zero toxic leftovers.

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Water (Pollution)

UndrDog Hemp sheds nothing
harmful and keeps waterways clean.

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Air (Emissions)

UndrDog Hemp pulls CO₂ from
the air while it grows, cleaning the
planet with every thread.

Trusted by 350,000 Men
Become An UndrDog
Lifetime Warranty
Buy 3 = Free Shipping

Reason #4

Lasts Up To 9x Longer
Than Cotton Tees

When your UndrDog shirt enters the wardrobe, cotton shirts unravel themselves in fear.

UndrDog Hemp DuraFlow Makes it almost impossible to tear, sag or stretch like cheap cotton.

Reason #5

Stay Cool With
Bamboo Airflow

UndrDog Shirts don't just breathe; they
give air permission to pass through.

Made with 31% Bamboo fiber for ultimate breathability. Stay cool no matter your lifestyle.

Reason #6

Hides Gut & Man Boobs

UndrDog shirts high-five every muscle; even
your shadow will flex and turn people on.

Hugs every muscle, grips the chest, and
stays loose below. Curved hem makes you
look taller & leaner.

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Reason #7

Better for Your Wallet

One Shirt for Life or
Replace 9+ Crappy Tees
Every Year?

Get the smart shirt that outlasts the rest. Durable, comfortable, breathable, and sustainable-backed by a lifetime warranty!

Statistic

The average guy drops $200 annually on 9 cotton shirts Most lose shape after 1-2 years.

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Reason #8

Sweat & Smell Resistant

UndrDog shirts don’t just resist sweat; they
make it evaporate in awe.

DuraFlow Hemp & bamboo naturally wick moisture and odor, keeping you dry and smelling fresher than you should be.

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LABOR 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.

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."

Dave Asprey

Dave Asprey

The Father of Biohacking

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

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

July 22 SOLD OUT
September 09 96% SOLD
November 12 0% SOLD
Buy 3+ for FREE Shipping

Lifetime Guarantee
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.

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

UndrDog's
5 Quality Checks

Thanks to innovative DuraFlow™Technology

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Breathability Comfort

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  • Breathable: Optimized airflow design
  • Odor Resistant: Antibacterial properties
  • Midweight: Instant satisfying comfort
  • Softness: Lasting Hemp-bamboo comfort

Durability Excellence

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  • Durable: Hemp strength + Midweight GSM
  • Heavy Duty: Extra double-stitched hems
  • Tough: Resists tearing and abrasion

Earth-Friendly & Sustainable

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  • Eco-Friendly: No polyester, biodegradable
  • Anti-Pollution: Clean land, air & oceans
  • PFAS-Free: Chemical-Free, sustainable

Advanced Performance

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  • Shape Stable: No sag, stretch or shrink
  • Wrinkle Free: Drys so no ironing needed
  • Skin-Safe: UV protection & hypoallergenic

Style Excellence

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  • Tailored Fit: Grips up high, loose below
  • Modern Look: Curved front & bottom hem
  • Identity: Recognizable brand emblem
Become An UndrDog ic
  • tickLifetime Warranty
  • tickBuy 3 = Free Shipping

Comparision
Our Vs Others

New
Feature

  • Durability
  • Breathability
  • Softness
  • Odor Resistant
  • No PFAS
  • No Microplastics
  • Lifetime Warranty
  • Quick Drying
  • UV/Allergy Protection
  • Environmental Impact
  • Shape Retention
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100%
Polyester

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100%
Non-Organic
Cotton

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Become An UndrDog ic
  • tickLifetime Warranty
  • tickBuy 3 = Free Shipping

Frequently Asked Questions
I Dare You To Ask…

Will my shirt be comfortable to wear?

Pfft... Feels like cloud-hug from Dwayne ‘The Rock’ Johnson––strong, comforting, but not in a weird way.

Your UndrDog shirt was engineered for maximum comfort, breathability and softness with each wear. The hemp/recycled-poly blend becomes softer with each wash. Perfect for any lifestyle!

How will my shirt be more durable than pure hemp or cotton shirts?
How non-sweaty and breathable will my shirt be?
Can I wash my shirt normally in a washing machine?
Will my shirt really be hypoallergenic, and how?
And UV rays?
Is it true my shirt will be ‘wrinkle-free’?
How does your lifetime warranty work?
Will airport sniffer dogs maul me for wearing this shirt?
How sustainable is the production of hemp/recycled poly shirts?
What’s the vision for UndrDog?
Become An UndrDog ic
  • tickLifetime Warranty
  • tickBuy 3 = Free Shipping