Rolling step stool combines mobility and stability so you can reach higher shelves or work areas more easily. The gray PP construction supports up to 330 lbs, so it can handle typical adult tasks in the home, office, or garage. An upper platform with a 14.5 x 16.5 in overall footprint gives you a stable standing area, while spring loaded wheels glide across hard floors or low-pile carpet and retract under your weight so the base grips the floor. The 7.5-in lower section can also be used alone as a smaller step stool, providing two height options in one compact design.