This is by far the BEST dog bed, I have ever had.  First of all, my dogs love it.  But I love it just as much as they do, due to the ease of cleaning.  Brilliant that the pad underneath the cover is waterproof.  LOVE THAT!  Why aren't all dog beds made like this.  And the slip resistant bottom is great, because my dogs love to run and dive into their bed and now it doesn't slide across the floor.  This is a well constructed bed, and I expect it to last far beyond the year that every other dog bed I have owned has lasted.  I bought a medium size for my two Boston Terriers and there is plenty of room for both of them to stretch out.