Invisible Trail Merino Collection
[Pre-Order] Invisible Merino Lightweight Trail Running Short Sleeve T-Shirt
This Lightweight Merino T-Shirt is crafted for ultra-distance performance and multi-day adventures during summer time! Tested and runner-approved over hundreds and hundreds kilometers on the trail.
→ Invisible Smell.
→ All-Season Comfort. Itch-Free. Non-Sticky. Breathable.
→ Every tee sold, 5% funds Invisible Cleanups and youth trail running development.
→ Conducted: 9+ Hike & Beach Cleanups. 340+ Volunteers. Removed 1,210+kg of trash.
| Feature | Specification |
| Material | Woolmark Certified 87% Merino Wool Rich Blend |
| Micron Count | 17.5μm Ultrafine (Next-to-skin softness) |
| Weight | Only 140gsm, lightweight |
| Odor Control | Natural antimicrobial |
| Sustainable Packaging | Packed in 100% Water-Soluble #INVISIBLEBAG |
| Impact | 5% funds cleanup events and youth trail running development |
| Testing Ground | Hong Kong Trails over 300+km |
→ 87% Merino Wool
→ 13% Nylon
Crafted from certified Woolmark Wool Rich Blend. Upgraded from our standard 18.5μm to 17.5μm Merino Wool, only 140gsm, means softer and next-to-skin feel, non-sticky, perfect for summer time!
Upgraded from our standard 18.5μm to 17.5μm Merino Wool, softer and next-to-skin feel, non-sticky. Only 140gsm, Woolmark certified Wool Rich Blend.
Natural antimicrobial magic keeps you “stink-free” even after back-to-back days on the trail.
With a 7,000-year history, it naturally regulates your temperature—keeping you cool in the heat and warm when the altitude climbs.
Non-sticky against sweaty skin. Unlike polyester or nylon, merino’s natural wicking properties draw sweat away, it lets your skin breathe.
For any activity! Long ride bike, hitting the slopes, skiing, or just Netflix on the sofa. It does it all!
For the Traveler
Packing light has never been easier. With its natural anti-odor and temperature-regulating properties, this Merino T-shirt is your perfect travel companion. It’s low-maintenance, can be worn multiple times without washing, and adapts to changing climates, from valley lows to mountain peaks.
For the Sports Enthusiast
Whether you're at the gym, playing outdoor and indoor ball games (tennis, paddleball, pickleball, squash), this Merino T-shirt has you covered. Its natural anti-bacterial properties keep you comfortable and smelling fresh, no matter how hard you play.
Thanks to merino wool's natural anti-bacterial properties, your gear requires less frequent washing, which helps it last longer and conserves water.
→ Machine washable on a gentle cycle (max 40°C)
→ Wash with like colors
→ No bleach
→ Do not tumble dry
→ Dry flat in shade
→ Iron on low heat (max 150°C)
→ No dry clean

Designed in Hong Kong by the Invisible Team, this Lightweight Merino T-Shirt is made with purpose.
Responsibly crafted in small batches in China, from taking care of the sheep to sheering, yarn spinning to finished T-Shirt. We ensure our partners provide a comfortable, air-conditioned environment. This approach helps us minimize overproduction while ensuring exceptional quality.
Ethical Sourcing and Production
Our commitment to ethical sourcing is as important as the quality of your gear. We ensure the wool is certified by Woolmark, a global authority on wool, and is your guarantee of quality, ensuring your T-Shirt is crafted from Merino Wool that meets the highest performance standards.
5% For Invisible Cleanups & Youth Trail Running Development
This Merino T-Shirt is a direct commitment to supporting the youth trail running development by The Peak Hunter, as well as fighting visible trail pollution and supporting our community. With every shirt sold, 5% goes directly to organizing cleanup events, fueling our team and the passionate volunteers, hikers, and runners who dedicate their free time to removing trash from our trails. This contribution helps us cover the logistics and gear needed to make these vital efforts possible.
Dissolvable Packaging
Your purchase is packed in our dissolvable packaging #INVISIBLEBAG along with our hangtag. Every part is dissolvable, compostable, and biodegradable. Simply dissolve them in water to make a positive impact.
This is key to responsible consumption, we’ve provided you the clear look at how we’ve priced this Invisible Merino Lightweight Trail Running Short Sleeves T-Shirt, so you can see exactly what goes into it. Each hangtag and transparency tag is printed on the dissolvable paper, just for a second in tap water.
| Item | Cost (HK$ / US$) |
| Material | HK$120 / $15 |
| Craftsmanship | HK$50 / $6 |
| Design & Marketing | HK$70 / $9 |
| Dissolvable Paper & Packaging | HK$3 / $0.4 |
| Logistics | HK$60 / $8 |
| Company Costs | HK$100 / $13 |
| Retailers | HK$186 / $24 |
| 5% For Cleanups & Youth Trail Running Development | HK$31 / $4 |
| TOTAL | HK$620 |
Shipping: We aim to dispatch your order within 3-4 days. We ship our Invisible Trail Merino Gear from our home Hong Kong directly to your doorstep, so the delivery time may vary based on your shipping address.
Hong Kong & Macau: Enjoy free shipping on all orders—no minimum purchase required.
International Shipping: Get free worldwide shipping when you buy 3 or more items.
No Surprise Fees: All import duties, taxes, and customs charges are fully included in your order. What you pay at checkout is exactly what it costs to get the gear to your door!
A note on color: We believe in the beauty of a product that's truly one-of-a-kind. While we have made every effort to display the colors as accurately as possible, please note that all product images are taken from the actual items. Due to factors such as variations in production batches, screen calibration, and photographic lighting, the photos may differ slightly from the actual product. We appreciate your understanding in case of any discrepancies.Returns and Refund:There is no return and refund, product warranty applicable, Invisible Company is responsible for quality control and checking before the delivery based on our internal quality control standard and product characteristics.
The Power of Merino
Merino Wool is a protein-based fiber, specifically, keratin, just like your hair. Each fiber’s natural crimp traps air, creating insulating pockets for exceptional thermoregulation. Its “dual naturel” also gives it incredible moisture control—the fiber feels dry on the outside, yet absorbs vapor from your skin.
Frequently asked questions
Yes. Unlike traditional wool, our lightweight Merino T-shirt is designed for tropical humidity. The worsted weave allows for maximum airflow and rapid moisture-wicking, keeping you cooler than synthetic polyester shirts.
The short sleeves version is lightweight, XS size is 98g, S size is 111g, M size is 122g, and L size is 133g.
Every purchase 5% funds the Invisible Hike Cleanup Club. We are "Trail runner trash pickers" designing for impact—using high-performance gear to solve the plastic pollution crisis on the peaks.
We recommend a cold machine wash or hand wash. Because it is naturally odor-resistant, you can wash it 3x less often than synthetic gear, saving water and reducing microplastic shedding.

