The World’s Best Training Gear Existed long before Polyester.
For thousands of years, men trained, fought, hunted, and built civilizations in natural fibers.
Then polyester showed up. Cheap. Plastic. Poisonous.
We said enough — and built the comeback short.
Meet Nero Active Shorts
What They’re Made Of
(No BS)
Forged from nature. Not oil.
No stink. No cling. No toxic sweat soup.
This isn’t “eco.”
This is how shorts were meant to be made.
Real-World Tests
Sweat test
Sweat test
Polyester traps heat and moisture, turning your shorts into a humid plastic bag.
Merino pulls sweat away, evaporates it fast, so you stay comfortable even when you’re pushing hard.
Odor test
Odor test
Synthetic shorts re-activate stink the moment you sweat.
Nero stays fresher for longer, merino helps reduce odor-causing bacteria buildup.
Microplastic test
Microplastic test
We agitated both fabrics under heat, friction, and moisture.
Polyester shed visible plastic fragments, the same microplastics that end up on your skin and in your body when you train.
Nero?
No plastic.
No shedding.
Nothing to absorb.
Fire test
Fire test
We held a flame to both fabrics.
Polyester melted instantly, curling, dripping, and breaking into hard plastic shards that smell like burning chemicals.
Natural fibers don’t melt.
They char, self-extinguish, and break down naturally.
Shorts VS Shorts
What to Expect
Day 1
You immediately notice how different they feel. No cling. No plastic heat.
Week 1
They become your default shorts.
No more bad odor with synthetic fabrics.
Month 1
You stop wearing your old shorts. They feel wrong now. You throw out other polyester clothing.
Long term
You don’t think about them. Which is exactly the point.
99-Day Risk-Free Trial
Wear them. Train in them. Sweat in them.
If you don’t feel the difference, send them back.
No forms.
No arguments.
No excuses.
It’s better for the planet
- 100% Organic GOTS certified cotton
- RWS Merino Wool from New Zealand
- Biodegradable
- No microplastic leaching
Every order is a step toward a future where natural wins over synthetic, and where farmers, not oil companies, get supported.
480+ 5 Star Reviews
Shorts for Any Season