Sticker Mule Masks

Sticker Mule make custom stickers, magnets, and more for your business (we use them for Na`au), but they have expanded to offering masks.  The masks are not yet customizable, but they are reasonably-priced, are designed with a filter pocket, and come with ear savers (my order happened to arrive with with complimentary filters, so I'm not sure if this is the new standard or they are just including them for a limited time).

If you are a first-time customer, you can sign up for their email list for a $10 discount code!