The InClimber Size: Width is 8.25 in. Length is 9 in. Height is 3.5 in. Weight: .4 pounds Horizontal distance of incline: 25 in. Vertical height of incline: 27 in. Description: The robot is built with four 3.5 inch wheels, which enable the robot to transition from level ground to the incline and back to level ground again. The RCX was positioned in the front end of the robot so as to avoid flippping backwards while climbing. The sleek buggy design gives the robot the confidence it needs to climb the slope... I think I can, I think I can.... :) J/K