for the report of a subject passed out behind the wheel. for all other items that have shipped: find the return policy that applies, below, and follow that procedure. in mid-august i left the air mattress out on the deck off my bedroom and the girls and i were out nearly every night watching the meteor showers. there is some kind of feedback system that feeds resistance to the wheels so that when he is looking at a hill on the screen his pedaling is harder, and when going downhill. 