The Astronaut Board (TM) is 33" by 20" and built from 3/4" birch plywood. The octagon base unit is 15" in diameter and attached with our NEW MODEL Lazy Susan. This new unit has more protected bearings for longer life and smoother operation. The board weighs about 16 lbs. The astronaut cover is made from astro-themed fleece material and held in place by an elastic sleeve. There is a light foam padding under the astronaut cover for increased comfort. The Astronaut Board (TM) is intended for a person weighing no more than 160 lbs.