I've heard concerns about the presence of toxins/PFAS in period underwear. Are these products safe?

kayaness® conducts rigorous testing on all our materials to ensure they are free from a broad spectrum of known hazardous substances, including PFAS and other harmful chemicals. We carefully source our materials from reputable factories recognized for producing safe and environmentally-friendly textiles. Here are the independent lab test results and we re-test our products for PFAS at regular intervals.

What is kayaness® Menstrual Underwear? 

We affectionately refer to it as an elevated approach to period care. Our underwear is reusable and designed to effectively absorb your menstrual flow. It offers a versatile alternative to traditional products like tampons, pads, menstrual cups, and discs. Alternatively, you can opt to use our menstrual underwear as a dependable backup while using an inserted product, such as a tampon or cup.

How does kayaness® Menstrual Underwear function? 

Our leakproof underwear relies on innovative technology with a moisture-separating gusset that effectively wicks away wetness, leaving your skin feeling drier for an extended period. The thin yet remarkably absorbent inner layer can absorb up to three times its weight in liquid, retaining moisture beneath the initial layer until it's time for washing. This unique combination ensures that our underwear is more comfortable, thinner, and drier compared to other period care options on the market. 

How much flow can kayaness® Menstrual Underwear absorb?

Our underwear is heavy absorbency and can hold 3-4 regular tampons worth of flow.

What is kayaness® Menstrual Underwear made of?

The exterior body fabric is 100% Recycled Polyester. The gusset fabric (portion of the underwear in contact with your genitals) is 95% Organic Cotton and 5% Spandex. The inner absorbent layer (sealed inside the underwear and not in direct contact with genitals) is 100% Polyester. Our high standard for our fabrics differentiates us from other menstrual underwear brands which are typically made entirely from virgin polyester.

What is the kayaness® Menstrual Underwear absorbent pad made of?

The custom manufactured absorbent pad is constructed using multiple tiers of polyester-based material. The upper layer efficiently draws moisture away from the body, ensuring a dry and comfortable feeling. Intermediate layers soak up and retain moisture, while the lower layer, resistant to leaks, securely contains everything within the underwear. The pad is 100% polyester and does not come into direct contact with your skin. The gusset portion of the underwear that comes into contact with skin and genitals is made from 95% Organic Cotton and 5% Spandex.

Where are kayaness® products manufactured?

Our textile products (underwear and tank tops) are designed in the USA, and manufactured in Hong Kong. We do not use a third party manufacturer - our products are made in-house by our own company. Our workers are paid fair wages, and our facility upholds high safety standards. Our body care products are manufactured in the USA.


What is the price for shipping and where do orders ship from?

Orders $50 and above - Free Shipping in the USA.

Shipping rates for all other orders are automatically calculated based on the package weight and delivery destination.

All orders are shipped from our Los Angeles office.

What carriers do you use for shipping?

We use US Priority Mail or UPS for shipping our orders. Transit time for any location in the USA varies from 3-5 business days. Transit time for overseas shipping varies by country and can range from 10 – 30 days. Please track and report any issues within a reasonable time frame to info@kayaness.com.

Do I have to pay customs duties for international orders?

For non-USA customers, import duty and taxes may be due when importing goods, whether by a private individual or a commercial entity. These charges, if any, are not included in the checkout total, and all such charges will be collected by local customs authority from the importer (you) at the time of delivery.

What returns do you accept?

We accept returns of products purchased on kayaness.com. If you purchased your product from another retailer please return it to that retailer.

What is your return policy?

If for any reason you are not 100% satisfied with your purchase, simply return it. We accept returns within 30 days of purchase. We will happily credit your original form of payment. Please email us at info@kayaness.com or call at +1 909 265-4326. We are here to help you!

Where do I send my return?

You can send your returns to:

kayaness Returns

324 S. Diamond Bar Blvd. #354

Diamond Bar, CA 91765

Please select a shipping method that provides a tracking number and delivery confirmation, and keep a copy of these numbers for your records. Sorry – we can’t be responsible for lost returns.

My product has a manufacturing defect, what should I do?

We do our best to make sure each item is perfect, but occasionally there can be a glitch. If you have a quality problem with one of our products, please contact us at info@kayaness.com, or call us at +1 909 265-4326. If possible, please include a photo!