As shown in FIG 1, {HEAD ~ the upper and lower sheets} 12 and gusset 14 of the known mattress 10 are sewn together with {TAIL ~ the sewn edge portions} thereof covered with a cloth tape 16 without losing the outer appearance of the mattress as a whole 
are sewn together with
As shown in FIG 1 , { HEAD ~ the upper and lower sheets } 12 and gusset 14 of the known mattress 10 are sewn together with { TAIL ~ the sewn edge portions } thereof covered with a cloth tape 16 without losing the outer appearance of the mattress as a whole
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH