Wider and deeper stair landings for small and large dogs; rubber grippers on bottom keep step secure and in place Carpet tread is removable for easy cleaning. Step height 6 Inch Snaps together very easily, no tools required. Top step depth 9.5 Inch, 2nd step depth 9 Inch, 3rd step depth 9 Inch Please scroll below and read "From the Manufacturer" for more exciting features Age range description: All Life Stages