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Still Wearing Polyester?
It’s Not Just Uncomfortable. It’s Harmful.
Polyester Sheds Harmful Particles Into Your Skin
Polyester Sheds Harmful Particles Into Your Skin
Cotton Degrades, Leading to Easy Wear and Tear
Sweat and Odor Gets Trap in Synthetic Fibers
The Search for Perfection
Making The World’s Strongest Shirt
A wake-up call that led to a pivot toward lasting durability
After countless disappointing attempts at finding a shirt that could keep up with his active lifestyle, Chuckie (Founder of Undrdog) realized that most clothes weren’t made to last—they were made to wear out.
The endless cycle of buying, wearing, and replacing shirts became frustrating, and the realization hit:
There had to be a better way.
Determined to create a solution, he embarked on a journey to find the perfect fabric..
A shirt that could outperform cotton and polyester, one that could endure everything life threw at it.
After testing countless materials, the breakthrough came with hemp
Natural Fibers 4X Stronger Than Cotton
Pesticide-Free Farming and All-Natural Materials
Breathable and Sweat-Resistant Properties
And by blending it with bamboo, the result was UndrDog Hemp Shirt.
The Shirt Built to Outlast Everything in Your Closet
Built for Ultimate Durability and Performance
DuraFlow™ Technology
Our innovative, patented fabric technology blends hemp, bamboo, and cotton for superior durability and breathability.
Unbeatable Durability & Quality
Sweat & Odor-Resistant
UV Protectant & Hypoallergenic
"I’m amazed at how strong and durable this shirt is. It’s become my go-to for gym sessions and outdoor adventures!" – Jordan T.
All-Day Comfort
Soft and flexible hemp fabric adapts to your body, providing comfort all day long, no matter what you’re doing.
Hides Gut & Man Boobs
No PFAs and Toxic Chemicals
Undrdog Lifetime Guarantee
"This shirt is next-level comfort. I wear it to work, gym, and weekends—can't believe it's made from hemp!" – Chris M
Sweat & Odor-Resistant
Breathable, moisture-wicking fabric keeps you dry, no matter how intense the workout or activity.
UV Protectant & Hypoallergenic
Built-in UV protection to shield your skin from the sun during outdoor adventures or daily use.
"I’m amazed at how strong and durable
this shirt is. It’s become my go-to for gym sessions and outdoor adventures!"
– Jordan T.
Revolutionary Fabric Designed for Movement
Engineered for Comfort, Flexibility, and Sustainability
All-Day Comfort
Soft and flexible hemp fabric adapts to your body, providing comfort all day long, no matter what you’re doing.
Unbeatable Durability & Quality
Sweat & Odor-Resistant
UV Protectant & Hypoallergenic
"I’m amazed at how strong and durable this shirt is. It’s become my go-to for gym sessions and outdoor adventures!" – Jordan T.
Hides Gut & Man Boobs
The fit smooths out your silhouette, giving you a sleek, confident look without feeling tight or restrictive.
No PFAs and Toxic Chemicals
Crafted without harmful chemicals like PFAs, so you can wear it with peace of mind.
Undrdog Lifetime Guarantee
Built to last, UndrDog backs every shirt with a lifetime guarantee, ensuring you can wear it for years.
"This shirt is next-level comfort. I wear it to work, gym, and weekends—can't believe it's made from hemp!" – Chris M.
“The hemp hype is legit! Insanely breathable, durable, and I look f’n jacked” - Daryn T.
(For snug fit, size down)
For snug fit, we recommend sizing down.
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 perfect fit, we recommend sizing down from your usual size.
Don’t like the fit? Don’t like the material? Simply contact support@undrdoghemp.com for an easy return. Unmatched Lifetime Guarantee. Yep… we’re that cocky confident.
This is “Project 001: Alpha”. 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).
No Plastic. No Pesticides. No B.S.
Our Blend is Built to Last, Naturally.
51% HEMP
Strong, durable, and naturally eco-friendly—hemp fibers provide the backbone of our shirts.
31% BAMBOO
Soft, moisture-wicking, and breathable, bamboo adds a comfortable, natural stretch.
18% ORGANIC COTTON
‘Sustainably farmed cotton that’s soft and breathable without the chemicals.
“Cotton sucks. Hemp is a way better cloth. Way more durable. There’s nothing like it.”
Built for Life.
Backed for Life.
If it wears out, we replace it. No questions asked.
The 
Difference
We don’t just outperform our competitors. We outlive them.
Hemp-Bamboo Blend
Customer Reviews
What The Guys
Have Been Asking
Will it be comfy?
Absolutely. The DuraFlow™ blend of hemp, bamboo, and organic cotton creates a midweight shirt with a higher GSM, designed for ultimate comfort. It’s breathable, soft, and fitted to enhance the male physique, gripping the body in all the right places to keep you feeling comfortable all day.
How can it be breathable AND durable?
UndrDog combined hemp’s unmatched durability with bamboo’s natural breathability. The result is a shirt that’s tough yet airy, so you stay comfortable no matter what.
What makes it oder/stink free?
Bamboo and hemp both possess natural antimicrobial properties that combat odors, while their moisture-wicking design pulls sweat away from the skin and allows it to evaporate, keeping you dry. No synthetic chemicals, just all-natural performance.
Just normal washing?
Yes, 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.
Why is “No PFAS & Microplastics” important?
PFAS and microplastics are proven toxins that never break down. Studies show they leach into your skin, bloodstream, and organs, increasing the risk of cancer, infertility, and even shrinkage of the penis and testicles. Over 20,000 studies confirm the harmful effects. Our tee is 100% free from these dangerous chemicals.
What's so unique about DuraFlow™?
DuraFlow™ is a breakthrough, patented fabric technology and a world-first blend of hemp’s strength, bamboo’s breathability, and organic cotton’s softness.
The tri-blend design features a three-strand structure, which is stronger than a two-strand design because it provides even tension and is more stable than a four-strand design, where fibers can conflict.
This perfect balance locks in strength, durability, and breathability, making it the world’s strongest toxin-free tee, with a lifetime guarantee. Designed for comfort, built to last.
Why this blend—hemp, bamboo, cotton?
Hemp gives unmatched strength, bamboo provides airflow and comfort, and organic cotton adds softness. Together, they create the most satisfying fabric for durability, breathability, and comfort.
Lifetime guarantee—really?
Yes, really! Our tees are built to last a lifetime. If your UndrDog shirt is the wrong size or ever wears out, we’ll replace it with a brand-new one, free of charge. All you need to do is cover the small cost to send it back to us, and we’ll handle the rest. That’s our commitment to quality, ensuring you’re always covered.
What makes it wrinkle-free?
The hemp and bamboo blend naturally resists wrinkles, keeping your shirt looking sharp after a long day or a trip through the wash. The fibers hold their shape, so you don’t have to worry about ironing or ironing out those wrinkles.
How sustainable is this shirt?
100% sustainable. The materials are organic and eco-friendly. UndrDog takes a firm stance against toxic chemicals, microplastics, and unsustainable practices. Their hemp, bamboo, and organic cotton blend ensures minimal impact on the planet, while giving you a shirt that's good for you and future generations.
What’s UndrDog’s big vision?
To redefine the way men think about clothing. UndrDog is committed to creating the strongest, most comfortable shirts on the planet that don’t sacrifice sustainability, health, or performance. Their mission is to provide men with a lasting solution to cheap fast fashion, offering stylish, eco-conscious shirts that stand the test of time.
Fast & Free Shipping
Free shipping on all orders, quick delivery.
Lifetime Guarantee
Lifetime warranty against defects and wear.
Certified Chemical-Free
Free from PFAs, microplastics, and toxic dyes.
Durable & Performance-Ready
Engineered to withstand intense activity and everyday wear.
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UNDRDOG, LLC
