Frequently Asked Questions
Everything you need to know about comfort, leak-proof protection, and your order.
How do I choose the right size for KT by Knix underwear?
We recommend using our detailed size guide which matches your hip and waist measurements to our specific cuts. Our products are designed to fit snugly to ensure leak-proof protection, so if you are between sizes, we generally suggest sizing up for comfort.
How do I wash and care for my period underwear?
Caring for your KT products is easy. Simply machine wash them on a cold cycle with mild detergent, then tumble dry on low or hang to dry. Avoid using bleach or fabric softeners, as these can damage the specialized leak-proof technology.
What is your return policy for first-time buyers?
We offer a 'First Pair Guarantee' which allows you to try one pair of underwear for 30 days. If you aren't satisfied, you can request a refund or exchange. For all other items, products must be unworn and in their original packaging to be eligible for return.
How long does shipping typically take?
Standard shipping usually takes 5-10 business days depending on your location. Once your order is processed, you will receive a tracking number via email to monitor your package's progress.
Are KT by Knix products safe and PFAS-free?
Yes, safety is our top priority. All KT by Knix products are rigorously tested to be PFAS-free and are made from high-quality, breathable fabrics that are safe for your body and the environment.
Do you offer international shipping?
Currently, we ship to the United States and Canada. We are working hard to expand our shipping capabilities to more countries in the near future, so stay tuned for updates.