5 Reasons Your Leggings Might Be Disrupting Your Hormones
Your Last Blindspot
You Read Every Food Label. Have You Read Your Leggings?
Sarah thought she had her clean-living routine perfected. Organic food. Non-toxic cleaning supplies. Clean skincare, down to the deodorant.
Then one morning she had a realization: "I switched to organic everything — except the thing pressed against my skin for eight hours a day."
Her leggings. Like most of us, she'd been living in them. Working, running errands, lounging, sometimes sleeping. It turns out what's in our leggings matters as much as what's in our food.
Why Your Leggings Might Be Disrupting Your Hormones
If you've meticulously cleaned up your diet and your home, it's time to look at the clothes you actually live in. Here are five reasons your leggings might be working against you.
The Synthetic Layer Is Touching Your Skin.
That buttery-soft feel of most popular leggings? It comes from polyester and nylon — petroleum-based plastic.
Check the label on yours right now. Most performance leggings run 80–88% synthetic. And the ones that lead with cotton aren't much better: a typical "cotton" legging is 55% cotton — which means the other 45% is polyester and spandex, and that's the layer sitting against your skin.
You wouldn't drink from a plastic water bottle left in a hot car. But you wrap your body in the same category of material and wear it all day.
The Chemicals Banned in Baby Toys Are in Your Leggings.
BPA and phthalates — the same chemicals you avoided in your baby's bottles and your food packaging — are used in textile manufacturing to make fabrics stretchy, wrinkle-free, and stain-resistant.
They're classified as endocrine disruptors, meaning they can interfere with your hormones. Fertility. Thyroid. Metabolism.
These chemicals don't just sit on the surface — friction and heat work them against your skin. Every workout. Every errand. Every time you sit in them for 8 hours.
Spandex for Stretch Is Pressed Directly Against Your Skin.
That four-way stretch you love? It comes from spandex — a synthetic polyurethane rubber. In effectively every legging on the market, including the ones marketed as organic cotton, the spandex sits on the inner surface directly against your body.
You can't make leggings stretch without spandex. But you can change where it sits.
One method wraps the spandex inside the natural fiber so it never contacts your skin. You get the same stretch.
Most brands don't do this because it costs more to produce.
Your Moisturizer Is Regulated. Your Leggings Aren't.
Formaldehyde — a known carcinogen — is used in textile manufacturing to prevent wrinkles and mildew. It's banned in cosmetics. Restricted in children's sleepwear. But adult activewear? No testing required. The fabric against your skin for eight hours a day is held to a lower standard than the moisturizer you wear for two.
The Color Is a Chemical Too.
Fiber content is only half the label. The other half never makes it onto the label at all.
Azo dyes are the industry standard for coloring activewear. Some break down into aromatic amines classified as carcinogens — which is why the EU restricts them in textiles that touch skin. Antimicrobial and anti-odor treatments. Wrinkle-resistant finishes. None of it is disclosed to you.
This is exactly what GOTS certification governs. To carry it, every dye and processing chemical has to come off an approved list — no azo dyes that release carcinogenic amines, no chlorine bleaching, no formaldehyde finishes, no toxic heavy metals.
A legging can be made of organic cotton and still be dyed with none of that controlled.
The Solution
Non-Toxic Leggings Without Plastic Touching Your Skin
We tested 14 organic cotton legging brands. All 14 still had spandex pressed directly against skin on the inner surface. The organic cotton was on the outside — for the label.
One construction method reverses this. It's called PureWrap™. The spandex is wrapped inside the organic cotton and bamboo viscose fibers, so only natural material contacts your body.
Same four-way stretch. Zero synthetic skin contact.
67% bamboo viscose · 28% GOTS-certified organic cotton · 5% spandex. Made with OEKO-TEX certified materials, independently tested for 100+ harmful substances.
Your Clean Practice
From Morning to Night — Nothing Synthetic Touches You
School drop-off. Coffee run. Pilates. Work from home. Couch. You wear leggings more hours than any other garment you own. Now every one of those hours is clean.
Available in 3 Colors
Midnight Black
Your everyday pair. From errands to evenings, nothing synthetic touches you.
Shop Now →
Finally — Leggings That Protect What Matters
Ready to make the switch? Leggings as clean as the rest of your routine, in Midnight Black, Oat Latte and Soft Olive.
$89 per pair · Two pairs $149
Frequently Asked Questions
What is PureWrap™?
PureWrap™ is our fabric construction. Instead of blending spandex into the surface that touches your skin, we wrap the spandex fibers inside organic cotton and bamboo viscose. You get the same four-way stretch, with only natural fiber against your body.
What are they made of?
67% bamboo viscose, 28% GOTS-certified organic cotton, 5% spandex. The 5% spandex is what gives them stretch and recovery — it's worked into the fabric structure, not laid against your skin.
Are they really non-toxic?
Omana is made with OEKO-TEX certified materials — independently tested against 100+ harmful substances including BPA, phthalates, formaldehyde and heavy metals. The fabric against your skin is GOTS-certified organic cotton and bamboo viscose.
Are they see-through?
No — opaque for everyday wear, including bending and movement.
What are the care instructions?
Machine wash cold with like colors, mild detergent, no fabric softener or bleach. Line dry or tumble on low.
How does the sizing run?
True to size. If you're between sizes, size up for a relaxed fit.
S (4–6): Waist 26–28" | Hip 34–36"
M (8–10): Waist 28–30" | Hip 37–39"
L (12–14): Waist 30–32" | Hip 39–41"
XL (16–18): Waist 33–35" | Hip 42–44"