This is an accepted solution.
Aria here, one of the Social Care gurus at Shopify.
Masks are definitely a trending product worth selling at the moment.
Art of Where has masks and they are based in Montreal. They ship their products from both Canada and the US.
It sounds like your business is based in Canada but it can be worth considering shipping products from the US to Canada. I find with USPS pricing and speed, it can be just as affordable and fast that way. If you'd like to consider that, these apps may help:
There are a couple of others in the app store but they are shipping from China.
I hope one of these works for you. I am sure more companies will start providing masks in the coming weeks.
It's Melissa from Contrado again
I hope this is helpful for you! Let me know if you have any questions.
Melissa from Contrado
Get the Contrado app for Shopify: https://apps.shopify.com/contrado-print-on-demand