The back is angled for increased comfort so you can totally relax during the Arizona Cardinals game. The two hinged clips on the bottom secures this hardback stadium seat to the bleachers. The durable polyester material is made to withstand regular use and the elements. It is designed with the Arizona Cardinals team logo on front and back of the backrest and folds flat for ease of carrying and putting away. Officially licensed by the NFL. Manufacturer direct from a trusted supplier.