Rolls when you push it, stops when you step on it. 16 x 8 steps have rubber tread mats. Top step 36" high. Nonskid tread surface. Meets OSHA Standards. 300-lb. load capacity. Manufacturer’s ten-year warranty. 23-3/4w x 33-1/2d x 40-3/4h. Shpg. wt. 37 lbs. (Cannot ship UPS.)