SEAT WITH UNIVERSAL BASE AND DEDICATED UPPER PORTIONS

A method includes forming a lot of universal foam support bases with a base compression strength, upper surfaces, and lower surfaces configured for mounting to a frame; determining desired parameters for a desired seat; constructing pieces of trim to form an outer surface; contacting each piece of trim with a foam material to form intermediate products, wherein each intermediate product includes a foam layer and trim layer, wherein the foam layer has a thickness of at least forty millimeters, and wherein the foam layer has an upper compression strength less than the base compression strength; processing the intermediate products to form molded upper seat portions having a uniform shape, wherein a thickness of each intermediate product ranges from less than ten millimeters to at least forty millimeters; and mounting each molded upper seat portion directly to a respective universal foam support base to form the seats.