FAQ
What makes SIREN different from other period underwear brands?
SIREN is more than just periodwear it’s luxury, function and confidence combined. Our seamless, sculpting designs feel like your favourite lingerie while delivering 10+ hours of leakproof protection. No bulk. No compromise. Just periodwear redefined.
How does SIREN periodwear work?
SIREN’s advanced 4-layer absorbent technology locks in moisture, wicks away sweat, and prevents leaks so you feel dry, fresh, and secure all day. Our leak-proof lining strips provide extra protection exactly where you need it, without sacrificing comfort or style
How long can I wear SIREN period underwear?
Our periodwear provides up to 10+ hours of leakproof protection, depending on your flow.
What absorbency levels do you offer?
- Light Flow (20ml) → Equivalent to 4 regular tampons
- Medium Flow (30ml) → Equivalent to 6 tampons
- Heavy Flow (50ml) → Equivalent to 10 tampons
Is SIREN periodwear sustainably made?
Yes - SIREN is committed to sustainability and ethical production. Our periodwear is crafted in facilities that adhere to the highest international standards for safety, sustainability, and fair labor practices.
✔ OEKO-TEX® Certified Fabrics – Made with materials that are tested and certified to be free from harmful substances, ensuring safety for intimate wear.
✔ FDA Approved Materials – Our components meet global safety standards for medical-grade textiles and skin contact.
✔ Global Recycle Standard (GRS) Compliance – Supporting responsible sourcing and environmental sustainability
Where do you ship?
We ship Australia-wide with FREE shipping on orders over $100 and FREE express shipping on orders over $199.
What’s your return policy?
💡 60-Day Money-Back Guarantee
We believe in our products so much that if you’re not completely in love with your SIREN periodwear, we’ll make it right—just email us at admin@sirenperiodwear.com.