I got these because I am always sticking random things under my doors trying to keep them from slamming shut in the warmer months, I've use everything from shoes to pieces of wood, I probably should have purchased these a long time ago.

These are made of a hard rubber and were the perfect size for under my doors and the grooves on the top of the door stops make sure that they stayed in place, Also there are hooks at the end making it easier to remove the stops from under the door. I purchased these at a discount from Amazon.ca but they are regularly priced at $14.99 and they are priced well and work great.