When exploring materials used in period underwear or other reusable hygiene products, you’ll often come across two key waterproof layers: TPU and PUL. While both serve the vital purpose of preventing leaks, they’re not the same. Understanding the difference between these two fabrics can help you make a more informed, comfortable, and sustainable choice.
TPU allows your skin to breathe
TPU is a more breathable option when it comes to the waterproof layer in period underwear. Unlike traditional plastic-coated fabrics like PUL, which can feel bulky and trap heat, TPU allows for better air circulation. In intimate garments like menstrual underwear, breathability matters—poor airflow can lead to excess moisture, which may cause discomfort or even increase the risk of bacterial growth and irritation. That’s why we choose TPU: to help keep you dry, fresh, and comfortable during your period—without compromising on leak protection.
TPU Feels Softer, Moves Better, Wears Quieter
TPU offers a softer, more natural feel—an essential difference when it comes to period underwear. Some waterproof materials, like PUL, can feel stiff or even make a crinkling noise when you move, much like putting on a raincoat. That’s because PUL is created using chemical solvents during the lamination process, which can leave the fabric feeling artificial and rigid. TPU, on the other hand, is bonded using heat—without harsh chemicals—resulting in a smoother, quieter, and more flexible finish. For underwear that sits close to your skin all day, softness matters.
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TPU Is Gentle on You — and the Planet
Unlike PUL, which relies on chemical solvents during production, TPU is created through a heat-bonding process that eliminates the need for harsh toxins. This not only makes TPU a safer option for sensitive skin, but also a cleaner and more environmentally responsible choice. In products like period underwear—where comfort and skin contact are constant—knowing that the waterproof layer is free from harmful chemicals makes all the difference. Because of this unique heat-bonded design, we recommend tumble drying on low to preserve the integrity of the material and ensure long-lasting wear.
TPU stands out as a safer, toxin-free alternative to traditional waterproof fabrics like PUL. Its chemical-free, heat-bonded production ensures comfort and health, making it ideal for period underwear and other intimate wear. For more information on our commitment to clean, sustainable materials, visit https://www.hongyiundies.com/.
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