Mighty Max Stair Climbing Dolly is extremely lightweight and easy to use because it holds up to 160lbs, yet weighs less than 4 lbs. Its large 9" x 12" carry plate, along with specially designed stair climbing wheels, help you handle heavy loads up stairs with ease. This Stair Climbing Dolly has a comfortably padded handle, folds virtually flat when not in use, and when open measures 15"W x 14"D x 38"H.