in order to supply a hot atmosphere the mold cavity 22 is preferably enclosed by a porous material for ease of illustration hot atmosphere vents 32 are shown which could alternatively supply the hot atmosphere to the mold cavity 22 the upper mold member 20 is capable of applying at least two different pressures to the body 14 the method of carrying out this invention using the mold assembly 24 is illustrated in fig1 and 3 first the fabric cover member 12 is placed to line the lower mold member 26 the porous polymeric layer 16 is next placed if desired to enhance comfort or styling lining the lower mold member 26 a predetermined amount of polymeric fibers 34 is then placed inside the mold cavity 22 the upper mold member 20 is lowered down onto the apparatus as shown in fig2 applying an initial pressure to the body the hot atmosphere used to bond the fibers may be supplied through numerous steam or hot air vents 32 placed in the upper mold member 20 the hot atmosphere is drawn through the mold cavity 22 by additional vents 32 in the lower mold member 26 through the use of an exhaust member 30 the temperature of the hot air or steam.