{TAIL ~ A headrest} according to an embodiment of the invention in FIGS 2, 3 and 4 is constructed detachably in such a manner that the whole of a main headrest body 4 is made of {HEAD ~ a cushion} like mass of soft material or at least the exterior part of the body 4 is detachably mounted to a headrest base 3 
{ TAIL ~ A headrest } according to an embodiment of the invention in FIGS 2 , 3 and 4 is constructed detachably in such a manner that the whole of a main headrest body 4 is made of { HEAD ~ a cushion } like mass of soft material or at least the exterior part of the body 4 is detachably mounted to a headrest base 3
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