YOFIT Doggy Steps - Non-Slip 3 Steps Pet Stairs,Holds Up to 70 lbsPet Steps dimensions: 18 x 14. 1 x 12. There are 4 silicone sucker on the bottom. It can be firmly fixed on floor or tile. So doggy will not slip down on the steps. Doggy Stairs is plastic though but are sturdy enough to support over 70 lb. Although they are super strong, the stairs are recommended for small to medium sized pets, due to the size of the stair treads Non Slip 3 Steps Pet Stairs,Fast easy assembly no tools required,Removable, washable