Activewear made from nature, not plastic.
100% merino wool performance gear that breathes, regulates temperature, and never holds odor. No synthetic fabrics. No compromises.
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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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Your activewear is made of plastic.
Polyester, nylon, and spandex are all petroleum-based synthetics. Here's why that matters.
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Microplastic Shedding
Every wash releases thousands of microplastic particles into waterways and onto your skin.
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Heat Trapping
Synthetic fabrics don't breathe. They trap heat and moisture, leaving you overheated and clammy.
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Odor Retention
Polyester harbors odor-causing bacteria. That post-workout smell? It's baked into the fabric.
There's a better way. Merino is:
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Naturally Breathable
Merino wool regulates body temperature in heat and cold. No overheating, no chills.
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Odor-Resistant
Merino's natural antimicrobial properties fight bacteria. Wear it multiple days between washes.
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Fully Biodegradable
At end of life, merino wool returns to the earth, not the landfill.
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 perSale price $65.00 USD -
Men's 100% Merino Wool Performance Tee
Regular price $85.00 USDRegular priceUnit price perSale price $85.00 USD -
Men's 100% Merino Wool Quarter-Zip
Regular price $130.00 USDRegular priceUnit price perSale price $130.00 USD
Women
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Women's 100% Merino Wool Tank Top
Regular price $65.00 USDRegular priceUnit price perSale price $65.00 USD -
Women's 100% Merino Wool Performance Tee
Regular price $85.00 USDRegular priceUnit price perSale price $85.00 USD -
Women's 100% Merino Wool Quarter-Zip
Regular price $130.00 USDRegular priceUnit price perSale price $130.00 USD
Most merino brands cut corners. We don't.
Many "merino" products blend wool with synthetic fibers to save on cost. You still get microplastics, diluted performance, and fabric that won't biodegrade. Aiua is different.
Merino blends with 30–50% synthetic fiber
- Microplastic shedding with every wash
- Reduced odor resistance from synthetic content
- Won't fully biodegrade at end of life
- Marketed as "merino" despite being part plastic
100% merino wool. Nothing else.
- Zero synthetic fibers
- Full odor resistance — wear for days, not hours
- Fully biodegradable in marine and soil environments
- Machine washable
Built to a higher standard
- 18.5 micron extra-fine fiber — soft, not scratchy
- 150 gsm lightweight knit — breathes in any climate
- RWS-certified responsible wool sourcing
- OEKO-TEX & BSCI certified production
Real merino. Real performance. No compromises.
Shop Best SellersSave with Sets
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The Gym Essentials (Women)
Regular price $129.00 USDRegular priceUnit price perSale price $129.00 USD -
The Gym Essentials (Men)
Regular price $129.00 USDRegular priceUnit price perSale price $129.00 USD -
The Two-Pack (Women)
Regular price $115.00 USDRegular priceUnit price perSale price $115.00 USD -
The Two-Pack (Men)
Regular price $150.00 USDRegular priceUnit price perSale price $150.00 USD
Merino 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





