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 Guide found on each product page. Our sizes range from Youth to Adult to ensure a comfortable, leak-proof fit for every stage of life. If you are between sizes, we suggest sizing up for maximum comfort.
How do I wash and care for my leak-proof products?
Caring for your KT items is easy. Machine wash them on a cold cycle with mild detergent, avoiding bleach and fabric softeners. For best results and longevity, hang them to dry. Do not iron or dry clean.
What is your return and exchange policy?
We offer a 30-day Leak-Free Guarantee. If you are not satisfied with your first pair of period underwear, you can return or exchange it within 30 days of delivery. Please note that for hygiene reasons, some items must be in their original, unopened packaging to qualify.
How long does shipping take?
Standard shipping typically takes 5-10 business days within North America. Once your order has been processed and shipped, you will receive a tracking number via email to monitor your delivery status.
Are KT by Knix products safe and sustainable?
Yes, our products are designed with safety in mind. We use high-quality, PFAS-free materials that are rigorously tested. By switching to reusable period underwear, you are also helping to reduce the environmental impact of single-use plastic waste.
Which payment methods do you accept?
We accept all major credit cards (Visa, Mastercard, American Express), PayPal, and Apple Pay. We also offer flexible payment options like Afterpay so you can shop now and pay later.