"You would not think that cats would like to lie on these pads. They are (to a person) someone harsh and scratchy feeling. But there is some quality about them that actually does attract cats, and they will choose to lie on them in preference to much "softer" "thicker" blankets or pads. I don't know why. I know the manufactuer says something about "electrostatic fibers" but I bet they don't know either!!! I saw a newer version of these that said they were "softer" and thought to myself, "oh no, they're making it to please the people & not the cats, I bet the cats won't like it nearly as much!" So try to buy the original. So far 3 of my cats are addicted to these "purr pads". I just wish they came in more sizes/ shapes. By the way, they can't be washed--just toss when too dirty. They are absolutely worth the price however."