Universal highback seat has backrest that folds for storage. Adjustable Yes, Dimensions W x D x H in. 20 x 20 x 24, Material Vinyl, Application Seat assembly, Color Black. Vinyl cover Adjustable slides Folding backrest Document pouch Mounting patterns 7in.-13 1/2in. width Slotted slides with 13in. max. depth W20in., L20in., H24in.