Frequently Asked Questions
Everything you need to know about your KT by Knix favorites.
How do I find the right size for my period underwear?
We recommend checking our detailed size chart and taking your hip measurements. If you are between sizes, we suggest sizing up for the most comfortable fit during your cycle.
How should I wash and care for my KT products?
Machine wash on a cold, gentle cycle with mild detergent. Avoid bleach and fabric softener. For best results, hang or lay flat to dry; do not tumble dry as it may damage the leak-proof technology.
How long does shipping take?
Standard shipping typically takes 3-7 business days within North America. Once your order ships, you will receive a tracking number via email to monitor your package's progress.
What is your return policy?
We offer a 30-day Wash & Wear Guarantee on your first pair of underwear. For all other items, products must be unworn, unwashed, and in their original packaging to be eligible for a return or exchange.
Are KT by Knix products safe and sustainable?
Yes, all our products are PFAS-free and designed to be a sustainable alternative to disposable pads and tampons, helping you reduce waste while staying comfortable and protected.
Do you ship internationally?
Yes, we ship to many countries worldwide. International shipping rates and delivery times vary by location and will be calculated at checkout.