Chuckie spent years building what he thought was the world's toughest tee. First version: hemp-polyester. Strong - but loaded with PFAS.
PFAS 'forever chemicals'
Use size chart below for slightly relaxed fit.
For snug fit, size down.
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.
Chuckie spent years building what he thought was the world's toughest tee. First version: hemp-polyester. Strong - but loaded with PFAS.
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 WE
OBSESSED OVER
Every detail engineered so an
average build looks solid.
Nothing left to chance.
A shirt that gives you insane confidence and changes how you carry yourself.
PFAS 'forever chemicals'
Phthalates (9 Restricted Types)
BPA, BPS, and BPB
VOCs
Banned Azo-Dyes
Polyester & Hidden Synthetics
Every single one came back ND: Not Detected. Not "low levels." Not "within acceptable limits." Not detected at all.
Oh, and the pH? Dead neutral (6.95). Your skin will never know the difference.
We put UndrDog through tests other brands wouldn't dare try.
Here's what happened.
Polyester melts into toxic goo.
UndrDog burns clean like a campfire.
One's plastic. One's plants.
Blasted fog under both shirts.
Polyester trapped it.
Heat stays in. UndrDog? Fog flows straight through.
300% more breathable than cotton.
Fired at a balloon inside each shirt.
Other shirts? Shredded. UndrDog? Balloon survived.
4x stronger than cotton.
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.
Hides Gut & Man Boobs
“UndrDog shirts high-five every muscle; even your shadow will flex and turn people on”
Hemp’s firm resilience clings to your body in all the right places.
Unbeatable Breathability
“UndrDog Shirts don't just breathe; they give air permission to pass through.”
Stay cool with Bamboo's natural breathability airflow.
4x Stronger Than Cotton
“When your UndrDog shirt enters the wardrobe, cotton shirts unravel themselves in fear.”
High-tensile hemp makes this shirt almost indestructible.
300% More Sweat Resistant than Ordinary Cotton Tees
“UndrDog shirts don’t just resist sweat; they make it evaporate in awe.”
Hemp creates a natural barrier that is moisture-wicking (keeping you dry and smelling better than you should).
Use size chart below for slightly relaxed fit.
For snug fit, size down.
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?