1. Eliminate the clammy synthetic cling
1. Eliminate the clammy synthetic cling
Polyester has one mode when you sweat: it turns into a heavy, sticky plastic wrapper.
Merino Air is 100% natural, highly breathable, the fabric behaves entirely differently. It actively vents heat and allows total airflow, staying crisp, weightless, and completely detached from your skin.
2. Polyester traps heat. Merino regulates it.
2. Polyester traps heat. Merino regulates it.
Polyester has one mode: trap heat against your skin. That's why you overheat.
Merino wool has been thermoregulating animals on alpine mountainsides for 10,000 years
Cool when you're working. Comfortable when you're not. Without doing anything.
3. Infinite wear. Zero odor.
3. Infinite wear. Zero odor.
Washing gear constantly is a massive chore, and packing a used gym top instantly ruins the rest of your luggage. Merino Air does not hold odor. You can crush a heavy workout, hang it up to dry, or toss it straight into your travel duffel.
4. Polyester pumps microplastics into your body
4. Polyester pumps microplastics into your body
Your skin soaks in what you put on it. That's how a nicotine patch works. You sweat. Your pores open.
Skin absorbs far more when it's hot. In lab testing, dermal absorption rose roughly 200–300% as temperature climbed.
5. Why we spend 15x more on our fabric
5. Why we spend 15x more on our fabric
Big activewear wants you to believe mass-produced plastic is premium.
We disagree. We combined elite New Zealand Merino with sustainable Tencel to create a completely custom, mesh knit.
The corporate giants literally can’t compete with this. Their margins depend on cheap synthetics, leaving Nero as the only place on earth where you can experience the unmatched performance of Merino Air.
6. Test it for 99 days
6. Test it for 99 days
Train in it. Sweat in it. Run in it. Travel in it. Wear it for a week without washing. If it's not the best performance tee you've ever owned, send it back within 99 days for a full refund. No questions. The fabric does the selling, once you wear it, you don't go back.
Merino Air™ T-Shirt
Merino Air™ T-Shirt
Temperature-Regulating: Stay cool in scorching heat and warm when it’s chilly, no more sweaty plastic feeling.
Naturally Moisture-Wicking: Merino wool quickly absorbs and evaporates sweat, keeping you dry and comfortable throughout the day.
Built for Every Workout: Crafted from unbelievably soft yet durable natural fibers, our tops handle intense workouts, weekend hikes, and everything in between.