An improved foldable stadium seat having a seat portion and a backrest. The stadium seat has adjustable hooks that can engage different width bleachers. The hooks also reverse to secure the backrest to the seat portion for easy carrying. The hooks have retention pins that engage securing holes to conveniently...http://www.google.es/patents/US5580130?utm_source=gb-gplus-sharePatente US5580130 - Seat for bleachers
