Your skin is your largest organ. Why wrap it in plastic?
Every synthetic shirt you own sheds thousands of microplastic fibers directly onto your skin — fibers your body absorbs through sweat and contact. If your skin is sensitive, irritated, or just never feels right after a workout, the problem might not be your skin. It might be your shirt.
Shop 100% merino wool →Microplastic fibers shed per synthetic garment per wash
Microplastics we may ingest weekly
Synthetic fabrics in any Aiua garment
The fabric against your skin matters more than you think
Most activewear is made from polyester, nylon, or spandex — plastics engineered from petroleum. These fabrics shed microscopic plastic fibers that your body can absorb, especially when you sweat. Heat and friction accelerate the process, which means the harder you work out, the more exposure you get.
For people with sensitive skin, eczema, or unexplained irritation, synthetic fabric is a common (and commonly overlooked) trigger. The chemical finishes used to make synthetics "moisture-wicking" or "anti-odor" add another layer of contact irritants that sit against your skin hour after hour.
What's actually in your shirt
Synthetic activewear
- Polyester, nylon, or elastane — petroleum-derived plastics
- Sheds microplastic fibers with every wear and wash
- Traps odor-causing bacteria
- Chemical finishes for moisture-wicking and anti-odor
- Non-biodegradable — persists in landfills for centuries
Aiua merino wool
- 100% merino wool — no synthetic blends, ever
- Zero microplastic shedding
- Naturally anti-microbial — resists odor without chemicals
- No chemical finishes needed — merino does it naturally
- Biodegradable — returns to the earth, not a landfill
Why merino works for sensitive skin
Softer than you'd expect
At 18.5 micron, our merino fibers are 3x finer than human hair. They bend on contact instead of prickling.
Breathes with your body
Merino fibers absorb up to 30% of their weight in moisture before feeling wet, then release it as vapor. Your skin stays dry without plastic coatings.
Naturally effective
Merino is naturally anti-microbial, UV-resistant, and temperature-regulating. Just fiber doing what fiber evolved to do.
Certified safe
Every Aiua garment is OEKO-TEX Standard 100 certified — tested for over 100 harmful substances. Safe enough for infant skin.
Merino wool clothing compared with standard clothing provided improvements in severity of atopic dermatitis as well as quality of life in atopic patients
— "Effects of Merino Wool on Atopic Dermatitis Using Clinical, Quality of Life, and Physiological Outcome Measures" Dermatitis Journal
Your skin deserves better than plastic
100% merino wool. No synthetics. No blends. No compromises.
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