Why you can trust Thinx Inc. products
At its core, Thinx Inc. was founded to provide safe, comfortable, and sustainable options for people with periods and bladder leaks. Customer safety is important to us, and so is your trust. That’s why we’ll always be honest and transparent about how our products are made. From rigorous absorbency testing, to objective third-party tests of our finished products, here are all the steps we take to uphold the highest standards of product safety.
Our certifications and safety standards
All Thinx Inc. underwear are rigorously tested for harmful chemicals, and independently certified through STANDARD 100 by OEKO-TEX®, which includes REACH requirements [20.HUS.04850 | HOHENSTEIN HTTI]. This OEKO-TEX®️ certification means every component—from fabric to trim—is thoroughly tested and certified for ecological safety.
What are Thinx Inc. products made of?
It might seem like magic, but every Thinx Inc. product has layered technology built into the gusset that makes it moisture-wicking, odor-controlling, and absorbent.
Thinx
Gusset Components |
| Heavy | Super | |||
1. Moisture-wicking layer Draws away wetness and neutralizes smells | 95% Cotton / 5% Elastane
| Our heavy absorbency comes in 2 different fabrications for the gusset. Rest assured, both hold up to 4 regular tampons’ worth of flow. If you purchased a heavy absorbency pair of Thinx, they may have a composition of 95% cotton / 5% elastane or 100% polyester. To see which fabrics your undies are made of, check the hangtag on your pair. | 100% Polyester
| |||
2. Absorbent layer Captures fluid in the gusset for all day dryness | 96% Cotton / 4% Elastane
| 96% Cotton / 4% Elastane
| 100% Polyester Microfiber Terry
| |||
3. Moisture-impermeable layer Prevents leaks and stays breathable | 100% Polyester laminated with PU
| 100% Polyester laminated with PU*
| 100% Polyester laminated with PU
|
*Both versions of our heavy absorbency undies contain these fabrics.
Thinx Teens
Gusset Components | |
1. Moisture-wicking layer Draws away wetness and neutralizes smells | 100% Polyester
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2. Absorbent layer Captures fluid in the gusset for all day dryness | 100% Polyester
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3. Moisture-impermeable layer Prevents leaks and stays breathable | 100% Polyester laminated with PU
|
Speax
Gusset Components | |
1. Moisture-wicking layer Draws away wetness and neutralizes smells | 100% Polyester
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2. Absorbent layer Captures fluid in the gusset for all day dryness | 80% Polyester / 20% Nylon
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3. Moisture-impermeable layer Prevents leaks and stays breathable | 100% PUL
|