This 4 foot bench with back is made with thermoplastic coated 1/2" hole perforated steel. This frame is 2 3/8" steel tube black powder coated legs. Thermoplastic coating will not fade, crack, peel, warp, or discolor for the life of the product. Thermoplastic finish is easily cleaned and is vandal proof. Comes portable for convenience with pre drilled holes for surface mounting. Locker rooms, tennis courts, park trails and gardens can be enhanced with these beautiful benches.