-PERFECT FOR SMALL TO MEDIUM PETS: The step size and spacing make using the stairs easy and comfortable for small to medium-sized pets -MEASUREMENTS: Stair dimensions are 24 in. D x 16 in. W x 20 in. H -LIGHTWEIGHT: The PupSTEP Lite Stairs only weigh 3 lb. but support over 70 lb. -COMFORTABLE ACCESS: Built-in side rails and non-skid feet help pets feel confident and secure when going up and down the steps