01
Microplastics
Merino is a natural protein fiber. It sheds wool, not plastic — nothing synthetic leaves the garment.
Natural fiber in, natural fiber out.
Source: De Falco et al., Environmental Pollution (2019)
Made from sheep, not oil
Nature's Fabric. Made for Comfort.
100% merino wool. Undyed, naturally odor-resistant and temperature regulating — performance that comes from the fiber, not from plastic.
- 100%
- Merino wool
- 0
- Synthetic dyes
- —
- One pair
Signature
Merino Shorts · —
The product
The Signature Shorts
A featherlight woven merino short built for long miles and the days between. Breathable, naturally odor-resistant and temperature-regulating — with nothing synthetic added for the sake of it.
ColorObsidian Black
Testimonials
Trusted by Those Who Move.
Real experiences. Real comfort. Discover why athletes, coaches, and everyday people choose Orrange.
The comparison
Polyester vs. Merino.
Switch between the two fibers across four things that actually matter when you train.
Merino — performance from nature.
02
Odor
Wool absorbs moisture inside the fiber and limits bacterial build-up, so garments stay fresher across repeat sessions.
Wear it again tomorrow.
Source: McQueen et al., Textile Research Journal (2007)
03
Temperature
Merino absorbs and releases moisture vapour, buffering temperature as conditions and effort change.
One pair, more days of the year.
Source: AgResearch New Zealand, wool thermophysiology research
04
End of life
Wool is biodegradable: buried in soil it breaks down and releases nutrients, typically within months.
From earth, back to earth.
Source: International Wool Textile Organisation, biodegradability review
The data
What Researchers Are Finding
A closer look at synthetic fibers, environmental exposure, and the research shaping conversations about the materials we wear.
The Synthetic Fiber Industry
~57%
Polyester accounts for approximately 57% of global fiber production.
Source: Textile Exchange, Materials Market Report (2023)
Plastic Particles Detected in Blood
17 of 22
Researchers detected plastic particles in 17 out of 22 human blood samples examined in a published study.
Source: Leslie et al., Environment International (2022)
A Concerning Global Decline
51.6%
A published analysis reported a 51.6% decline in average sperm concentration between 1973 and 2018.
Source: Levine et al., Human Reproduction Update (2022)
These studies document the presence of synthetic particles and broad health trends. They do not establish that clothing causes any specific health outcome — and we won't claim they do.
Read the researchThe alternative
Performance from nature.
Naturally odor-resistant
Wool limits the bacteria behind workout odor, so one pair covers back-to-back sessions.
Temperature regulating
Merino buffers heat and cold as your effort and the weather change.
Breathable
Moisture vapour moves through the fiber instead of sitting on your skin.
No synthetic dyes
Undyed, naturally coloured merino. The colour is the wool's own.
Soft, quiet comfort
17.5 micron fiber sits flat against skin — no prickle, no chafe seams.
Built to last
Flatlock reinforcement at every stress point, plastic-free packaging.
The Orrange difference
Meet the Signature Shorts.
One pair. Natural performance. Nothing unnecessary — 100% merino wool, undyed, built for long miles.
Made from sheep, not oil.
One pair. Natural performance. Nothing unnecessary.
Shop the Signature Shorts · —Stay in the loop
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Restock alerts, new colourways and the research behind merino. No noise.