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Product & Material

What is Merino wool?

Merino wool is a natural fiber grown year-round by Merino sheep, consuming a simple blend of natural ingredients including sunshine, water, fresh air and grass. Every year these sheep produce new fleece, making wool a completely renewable fiber.

Is Merino wool itchy?

This wool isn’t like the typical itchy sweater that comes to mind. It’s superfine, incredibly lightweight and soft against the skin. It is gentle on even the most sensitive areas and keeps you super comfortable at all times.

How do I wash and care for my Au Natural undies?

Au Natural underwear is very easy to care for and has been specially processed to prevent it from shrinking, allowing you the ability to machine wash in cold water and tumble dry - for ultimate convenience! Bonus, Merino wool is quick drying and will air dry in under 4 hours!

How can I ensure my Au Natural undies last a long time?

To preserve the quality of your underwear, we recommend washing them with similar colors in a washer bag.

Are your underwear seamless?

The Seamless Merino styles are completely seamless and do not show any panty lines through even the thinnest leggings.

How do Au Natural underwear fit?
  • Our Everyday underwear styles fit true to size and we recommend taking your normal size. If you’re in between sizes, we recommend sizing down here. 
  • For our Seamless styles, we recommend sizing up for a more comfortable fit. 
  • Please refer to our size chart
What does Woolmark-Certified mean?

Au Natural is extremely proud to be the first and only Woolmark-Certified underwear brand in the United States. This means we have a certified supply chain and our products passed a rigorous testing process to ensure the highest quality garment is delivered to our customers. All our products come with the Woolmark-certified tags.

Orders & Shipping

How do I track my order?

After placing your order, you will also receive an email with tracking information once your order ships.

How long does it take to receive my order?

Orders typically ship within 3-5 business days and can take up to 7 days after the order ships to be received. If you need your Merino wool underwear sooner or have any shipping questions, please email us at

Do you offer free shipping?

We offer free shipping on orders over $75.

What kind of packaging do you use?

All our orders are shipped in 100% recyclable mailers.

What countries do you ship to?

We currently ship within the United States but have international distribution with retail partners. If you live outside the US and would like to place an order, please email us directly at

Can I send Au Natural as a gift?

Yes! You have the option to send a gift card or product directly and include a gift message at checkout.

Do you offer discounts?

Subscribe to Au Natural and receive a one-time 10% discount code to use on your first order!

Returns & Exchanges

What is your return policy?
  • Due to the intimate nature of the product, we cannot accept returns and all sales are final. Be sure to reference the sizing guide to ensure the proper fitting before placing your order. 
  • If for any reason you are not satisfied with your purchase, please contact us and someone from our team will get back to you within 48-hours.

Secure transactions

Transactions are handled with bank-grade security.

Simple checkout

Our secure checkout is quick and easy to use.

Get in touch

Have questions? Get in touch with us at any time at


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