These pet stairs are a MUST BUY!  I want to start by stating that I have been through three other sets of pet stairs, and those do not even compare to these. I have a king sized bed and wanted to make it easier on my two small dogs to get up and down. The dogs have absolutely no trouble walking up and down, and the best part is the stairs stay put on wood floors. There are tiny nubs on the bottom of the stairs that do a perfect job of gripping the floor so they don’t move. I have had different stairs move while my dog was running up them and he fell because they moved. That has not happened with these!  These pet stairs are soft, yet sturdy and durable. The removable cover is a bonus. If you have been searching for pet stairs, look no further and purchase these!