Biker was riding his off-road bicycle in a park when the bicycle hit a rock and stopped suddenly, throwing the biker over the handle bars. The biker landed on his head and sustained serious neck injury, resulting in quadriplegia. At the time of the incident, the biker was wearing a helmet and riding gloves. Biker argued that the bicycle lacked appropriate instructions and warnings. The bike came with a generic owner's manual for an ordinary street bike and contained no warnings of the hazards associated with off-road biking.