A driver backrest and passenger headrest were options. Most kayaks therefore have footrests and a backrest. The backrest and headrest are screwed together by a pair of aluminum supports. These folding chairs are often multiple reinforced, and come with padded seats and backrest. Made of fiber, the seats have a padded backrest in synthetic fabric. A two piece seat with an integrated backrest was incorporated. Rosso Alfa paint, engine, Sabelt racing seats with Alcantara upholstery and backrest made of carbon. A piece of metal inside the backrest hinge deforms, absorbing more energy. It has two seats which share a backrest. The rubber mounts were pliable, allowing the backrest to flex and move with the sitter. The backrest was also attached using shock mounts. Front-X chairs are similar to side-X stools, but have the addition of a backrest. Some seats had an attached backrest called a "lazyback". Example&colon; The Vision 8-Ball does not come with the passenger backrest/trunk. Old Kingdom thrones had a backrest that reached up to the neck of the king.