PURPOSE: To eliminate deformation and permanent set in fatigue and to improve air permeability by housing a sandwich laminate which is arranged with felt layers on both top and bottom sides of a core part consisting of many small pieces of foamed synthetic resins and is disposed with a front surface layer of soft blank materials, such as cotton, wool and feather, on the outer side thereof into a bag and subjecting the laminate to quilting.

CONSTITUTION: The sandwich laminate is formed by putting the small pieces 1 of the foamed synthetic resins, such as polyolefin resins and polyurethane resins, into a bag 2 to form the core part, disposing the felt layers consisting of molded surfaces on both top and bottom sides thereof and further disposing the front surface layer 5 consisting of, for example, the cotton, on the outer side thereof. This laminate is housed into the bag 6 and is quilted to form the bedding. The small pieces may be formed by using so-called industrial waste, such as molding scrap, cut scrap used cushion materials and various kinds of foamed moldings, and by pulverizing or by finely segmenting waste. The sizes of the small pieces are usually preferably about 5 to 30mm in diameter or one side in the case of, for example, spherical shapes or cubes.