We had to purchase steps for our elderly cat to be able to get on the bed several years ago.  As he has continued to age, there came a point when the old stairs, (roughly a foot high) were not tall enough for him to jump up onto the bed.  Although it took a few days for him to get used to the new steps and feel comfortable using them, these steps are great.  They are very sturdy (important because our cat is not only elderly, but obese) and come all the way up to the top of the bed.  The spacing between individual steps is small enough that moving from one to the next is no more difficult than the stairs between levels in our house.  Great buy, especially at this price.