This chair hooks on to any kind of bleacher or bench you see at any sports event. Its folding design makes it easy to store and carry. The stadium seat is constructed to last! Its square, tubular steel frame with powder coat finish insures it wont bend, break or weather. The seat bottom and back are made of high quality canvas that are designed to resist mildew. For your safety and to resist slipping and skidding, rubber non-slip skids are mounted to the bottom.