Earth's lifetime tee:Hemp. Bamboo. No PFAS.Grips arms. Hides gut.
1 in 100 Gets Free Gold Bar
Real gold. Real odds.
One order in every 100 ships with a free 1g gold bar tucked inside the package.
.999 fine gold · worth around $200 at spot price · picked at random
Choose Your Size
Usual size for a snug fit · one size up for a relaxed fit🎉 Halloween Sale Savings auto-applied.
✔Lifetime Warranty
Material
UndrDog Hemp: 51% hemp, 31% bamboo, 18% organic cotton.
Zero PFAS, zero microplastics, zero harsh chemicals.
Made with our DuraFlow™ blend: the toughness of hemp plus the airflow of bamboo, in a shirt built to last without forever-chemicals.
- Weight: midweight, with plenty of airflow
- Strength: about 4x tougher than cotton
- Breathability: bamboo keeps you cool
- Moisture control: pulls sweat away so you stay dry
- Shape: keeps its form for decades, no sagging
- Wrinkles: resists them, low upkeep
- Eco: natural fibers only, no plastic
- Comfort: soft from day one and it stays that way
- Color: resists fading
- Value: outlives ten regular tees
- Sun: natural UV shielding
- Skin: hypoallergenic, no irritation
Size & Fit
- Fit: close on the arms and chest, easy around the waist, so you look built at any size.
- Snug fit? Order your usual size. Prefer it relaxed? Go one size up.
Washing
Treat it like any shirt you own: regular wash, regular dry, no special steps. It keeps its strength and shape through repeated washes and low-heat tumble drying.
Lifetime UndrDog Warranty
Not happy with the fit or the fabric? Reach us through our contact page and we will sort out the return. Our lifetime warranty covers the shirt for as long as you own it.
Are There Other Colors? How does UndrDog Work?
This is “Project 001: Midnight”, the one project open to everyone and the emblem of the brand. Every order brings you into the UndrDog collective, with early access to the projects that come next.
Hides Gut & Man Boobs
“UndrDog shirts salute every muscle; your own shadow will flex and catch people’s eyes”
The firm spring of hemp hugs your body exactly where you want it.
Unbeatable Breathability
“UndrDog Shirts do more than breathe; they invite air to flow right through.”
Stay cool with Bamboo's natural breathability airflow.
4x Stronger Than Cotton
“Once an UndrDog shirt joins your closet, the cotton ones fall apart out of fear.”
High-tensile hemp makes this shirt almost indestructible.
300% More Sweat Resistant than Ordinary Cotton Tees
“UndrDog shirts do more than fend off sweat; they leave it vanishing in awe.”
Hemp forms a natural moisture-wicking shield (so you stay dry and smell better than you have any right to).
Did you know?
Prior to its ban in the 1930s, hemp supplied 80% of clothing—tough, sustainable and without equal.
Then, in a blink…
Hemp was sidelined, victim to political greed and propaganda.
Their motive?
Wipe out hemp, and cotton, timber and synthetics make more money–today three of the most polluting industries on Earth!
Their Playbook From The 1930’s Up Until The Tables Turned In 2018 and Now:
17th-18th Century
Hemp’s Golden Age: it supplies 80% of the world’s textiles, ships and exploration gear.
1935
George W. Schlichten patents the first hemp decorticator, a machine that improves how hemp is processed.
1936
A propaganda push against hemp begins, shielding the synthetic industry.
1937 Marijuana Tax Act
Penalizes hemp, crippling potential.
1970 Controlled Substances Act
Wrong classification sidelines benefits.
1980s-1990s
Legal restrictions overshadow eco-advantages.
2018 Farm Bill
Legalizes hemp, acknowledging safety and versatility.
2024: Undrdog
Raising the standard of men’s fashion with premium shirts, and bringing hemp’s heritage back.
Lifetime Warranty:
Buy Once, Wear For Life
Most men spend $180 each year on throwaway fast-fashion cotton. Sharp guys pick quality rather than quantity.
- Ages like fine whiskey
- Holds shape for 30+ years
- No expiry date - refund anytime
“I sweat heavily, and this shirt pulls moisture off me, lets air through and never feels stifling. It holds its shape and doesn’t pick up odors. Greatest shirt I own! Getting 2 more!”
UndrDog's 5 Quality Checks
Thanks to innovative DuraFlow™ Technology
Breathability & Comfort
- Breathable: Optimized airflow design
- Odor Resistant: Antibacterial properties
- Midweight: Instant satisfying comfort
- Softness: Lasting Hemp-bamboo comfort
Durability Excellence
- Durable: Hemp strength + Midweight GSM
- Heavy Duty: Extra double-stitched hems
- Tough: Resists tearing and abrasion
Earth-Friendly & Sustainable
- Eco-Friendly: No polyester, biodegradable
- Anti-Pollution: Clean land, air & oceans
- PFAS-Free: Chemical-Free, sustainable
Advanced Performance
- Shape Stable: No sag, stretch or shrink
- Wrinkle Free: Drys so no ironing needed
- Skin-Safe: UV protection & hypoallergenic
Style Excellence
- Tailored Fit: Grips up high, loose below
- Modern Look: Curved front & bottom hem
- Identity: Recognizable brand emblem
Hemp Is Scarce, So We Are Only Adding 6,837 New Customers In October.
This ensures the highest-quality hemp for the Undrdog collective (you).
Frequently Asked Questions
I Dare You To Ask…
Will it be comfy?
Yes. DuraFlow™ mixes hemp, bamboo and organic cotton into a midweight, higher-GSM shirt built with maximum comfort in mind. It breathes, feels soft and has a cut that flatters the male build, hugging the body exactly where it should so you stay comfortable from morning to night.
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?
Customer Reviews
United States
Great shirts: comfortable, with an excellent fit and finish!
Excellent, best clothing purchase I’ve ever made.
United States
T-shirt
These tees are incredibly comfortable and perform nicely during workouts. They keep me cool. I like their look: snug across the arms and chest, relaxed around the belly. The slate color is really nice. Just noticed they offer long sleeves 🤓 and the polos look pretty great as well.
Underdog rocks ! Love the shirts
Very comfy. I rarely wear underwear, yet these are great on the days I do.
Super comfy shirts. When I sweat in them they dry fast, and my underarms don’t stay wet and clammy the way they did in my polyester shirts. I plan to buy extras as presents for family and friends.
United States
Excellent alternative!
Perfect shirt. Fits well, has a lovely color & lets the skin breathe. Totally pleased with what I bought.
United States
Great shirt
Really good experience. Ordering was simple, the product is great and the fit is great
United States
DAY BOSS!
The comfiest underwear I have had! I barely feel I have anything on!
United States
Ohh My I love emmm
I want more. They are amazing..Santa Clause is bringing more!!
United States
Underdog rocks
My second order. The black T’s from my first purchase fit better than any T’s I have owned. The Sage was a nice shade, though the fit didn’t work for me - the neck seemed a bit too wide. I requested an exchange, and Underdog sorted it out fast: new black T’s were on their way the very day I sent the Sage ones back. Fantastic service and a fantastic product!!
