What are these things?

By the door in the Ugg Boot store

I was in my local Ugg Boot store and saw these things hanging by the front door. What are they?

Given that this store is in Vancouver, it really shouldn't be a surprise that these things are umbrella bags. When you come into the store you are supposed to put your wet umbrella into the bag, and carry it around with you. In lots of other stores you'll find an umbrella stand or holder where the you are supposed to put your wet umbrella. The only problem is that far too many people forget their umbrellas. If you carry it with you then you won't forget it.

But what do you do with the wet bag when you leave the store?