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5-Star Reviews
Rated 5.0 by real customers
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RWS-Certified
Ethical wool, verified supply chain
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The Collection
Three essentials. 100% merino wool. Nothing else.
Men
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Men's 100% Merino Wool Tank Top
Regular price $65.00 USDRegular priceUnit price per -
Men's 100% Merino Wool Performance Tee
Regular price $85.00 USDRegular priceUnit price per -
Men's 100% Merino Wool Quarter-Zip
Regular price $130.00 USDRegular priceUnit price per
Women
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Women's 100% Merino Wool Tank Top
Regular price $65.00 USDRegular priceUnit price per -
Women's 100% Merino Wool Performance Tee
Regular price $85.00 USDRegular priceUnit price per -
Women's 100% Merino Wool Quarter-Zip
Regular price $130.00 USDRegular priceUnit price per
Worn in the wild
@benletvin
@gunnar.keeling
Humid hike in HI
@jestonesnaguit
@kes.adilla
Mirror check
Morning hike
on the run
Quarter Zip
Ski day, CO
@trey_wakefield_
@warverine_mma
Most merino brands cut corners. We don't.
Many "merino" products are blended with synthetic fibers. You end up getting microplastics, diminished performance, and fabric that won't biodegrade. Aiua is different.
Typical brands
Merino blends with 30–50% synthetic fiber
- Microplastic shedding with every wash
- Odors cling to fabric more readily
- Won't fully biodegrade at end of life
- Marketed as "merino" despite being part plastic
Aiua
100% merino wool. Nothing else.
- Zero synthetic fabrics
- Full odor resistance
- Fully biodegradable
- Machine washable
The details
Built to a higher standard
- 18.5 micron extra-fine fiber
- 150 gsm lightweight knit — breathes in any climate
- RWS-certified responsible wool sourcing
- OEKO-TEX & BSCI certified production
100% merino. 100% performance. No compromises.
Shop Best SellersMerino Wool vs. Polyester
Merino Wool
Polyester
Odor resistance
Natural
Chemical treatments
Temperature regulation
Adapts to body
Traps heat
End of life
Biodegrades
200+ years in landfill
Moisture wicking
Absorbs 30% of weight
Surface only
Softness on skin
Extra-fine 18.5 micron
Plastic feel