Frequently Asked Questions

Thank you for your interest in our products! We’ve compiled these frequently asked questions to assist before, during, and after your purchase. Have further questions not answered below? Please contact us.

We actively filling orders as quickly as we can. Please note that our masks are not on backorder! The response to the SHEMA97 masks by has been truly overwhelming. We are so grateful for your support!

Due to the widespread winter storm affecting the southern United States, USPS and UPS deliveries may be delayed. We appreciate your patience.


Is expedited shipping available?

Due to overwhelming demand, we cannot offer expedited processing and shipping at this time.

Where are the masks made, and where do they ship from?

Our SHEMA97 Functional Active Mask is made in South Korea, and ships from the US.

What are the shipping costs?

Shipping is FREE within the continental United States, Hawaii, APO/FPO and Puerto Rico! Shipping to Canada is currently $12 per mask, and the total will be displayed at checkout.

Other Ordering Questions

My organization is tax-exempt. Can I place a tax-exempt order online?

We would be happy to assist with placing a tax-exempt order with appropriate documentation. Please create an account via our My Account page, then contact us to have your account marked as tax-exempt. Once it has been marked, you can place tax-exempt orders while logged in.

I need to change the address or other details on my order. How can I do that?

Contact us to update the details of your existing order. Please include your order number in your message.

Why did the checkout page say my zip/postal code is incorrect?

For the safety and security of all customers’ financial information, our systems verify the billing zip/postal code of credit/debit cards with the card issuer. If you see “your billing zip code is incorrect” at checkout, your bank or credit card company’s systems have indicated that what you entered does not match what they have on file. Please contact them to verify your billing address, then feel free to return to checkout.


What size should I order?

Our masks are available in M, L, XL, and XXL. M fits youth and small adult sizes, L fits medium/large adult sizes, XL fits extra-large adult sizes, and XXL is best for those with full beards or XL/XXL adult sizes.

What are the dimensions of the masks?

Mask measurements are as follows (length/width):

  • M: 8″ x 5″
  • L: 8″ x 5.5″
  • XL: 10″ x 6″
  • XXL: 10″ x 6.5″

Mask Use, Care & Washing

How do I properly fit and put on my mask?

We have prepared a video demonstrating proper wear and fitting of the SHEMA97 mask by Visit our About the Mask page to watch it!

What is nanofiber, and how many times can the masks be safely washed?

Nanofiber is a filter with a structure in which long and thin fibers superimpose with a thickness of 200 to 500 nano-filters. It physically locks small particles, and it is easy to wash out particles caught by the filter with water.

The filter is deformed very slightly when washed several times, and the particle filtration rate drops to about 50% after washing 20 times. Given this, We recommend a maximum of 20 washes.

How do I wash my mask?

Please wash your mask by hand using warm water and mild, liquid dish soap. Then, allow to air dry. Do not machine wash or dry.

My stopper came off, how can I thread it back on my mask?

We have created a video demonstrating how to thread a stopper back on your mask strap. Please visit our About the Mask page to watch it.

Account Information

I can’t access my account. What should I do?

If you created an account during checkout and are unable to log in, visit the Lost Password page and enter your email address. You will receive an email with a link to set a new password, which you can then use to log in.

I would like to associate my order with an account. Can I do that?

Yes! If you placed an order as a guest, but wish to create an account to track your order and any future orders, first visit our My Account page. Register an account with the same email address as your order, then contact us and we will assign your order to your new account.