Frequently Asked Questions
Everything you need to know about KT by Knix products, sizing, and shipping.
How do I find the right size for KT by Knix period underwear?
We recommend using our detailed Size Chart located on each product page. Our sizes are designed to fit comfortably and securely to prevent leaks. If you are between sizes, we suggest sizing up for a more comfortable fit during your cycle.
How do I wash and care for my KT products?
Caring for your KT items is easy: machine wash on a cold cycle with mild detergent, then tumble dry on low or hang to dry. Avoid using bleach or fabric softener, as these can break down the leak-proof technology.
What is your return and exchange policy?
We offer a 30-day 'Proof in the Pouch' guarantee. If you are not satisfied with your first pair of period underwear, you can return or exchange them within 30 days of delivery, even if they have been worn and washed.
How long does shipping take?
Standard shipping typically takes 5-10 business days within North America. Once your order has shipped, you will receive a confirmation email with a tracking number to monitor your delivery status.
Are KT by Knix products safe and PFAS-free?
Yes, safety is our top priority. All KT by Knix products are rigorously tested and are confirmed to be PFAS-free and made with high-quality, body-safe materials.
Do you offer international shipping?
Yes, we ship to many countries worldwide. International shipping rates and delivery times vary by location and will be calculated at checkout.