Even though we make all of our sheets in Burnaby, BC, the fabric we use comes from overseas and the problems in international shipping are now our problems too. This article is a good explanation of what is going on; it is from NPR in the States so it focuses on the American situation but the very same things are affecting Vancouver as well.
image credit: Daniel Ramirez from Honolulu, USA, CC BY 2.0 , via Wikimedia Commons