THIS IS ABSOLUTELY TERRIBLE FOR MY ADULT CAT, EVERY TIME SHE HAS A GO ON IT,IT FALLS OVER , THE BASE TO FAR TO LIGHT IN WEIGHT FOR A ADULT CAT IT ALWAYS FALLS AS SOON AS SHE WENT.ON TO IT ..IT'S OKAY FOR KITTENS......PERIOD. THE BASE HAS TO BE A LOT WIDER N HEAVIER FOR A CAT..TO USE IT COMFORTABLY