Frequently Asked Questions
Everything you need to know about your Knix experience, from sizing to shipping.
How do I find the right size for Knix products?
We recommend using our comprehensive Size Guide located on each product page. Our Leakproof underwear and wireless bras are designed for a snug yet comfortable fit. If you are between sizes, we generally suggest sizing up for the best experience.
What is your return and exchange policy?
We offer a 30-day 'Knix Love Guarantee.' If you are not satisfied with your first pair of underwear or bras, you can exchange them or return them for a full refund within 30 days of delivery, even if you have worn and washed them.
How should I wash and care for my Leakproof items?
To maintain the integrity of the technology, machine wash your items in cold water on a gentle cycle with mild detergent. Avoid bleach and fabric softeners. For best results, hang to dry or tumble dry on low heat.
How long does shipping take?
Standard shipping typically takes 3-7 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.
What payment methods do you accept?
We accept all major credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, and Google Pay. We also offer interest-free installment plans through Afterpay and Klarna.
Are Knix products sustainably made?
Sustainability is at our core. We use high-quality, durable materials designed to replace disposable products. We are committed to ethical manufacturing and reducing our environmental footprint across our entire supply chain.