Body supporting mattress

摘要: A mattress employs a first plastic unit which is flat and horizontal provided with peripherally disposed endless hollow tube inflatable. The tube, when inflated, defines raised peripheral border surrounding enclosing an inner central area of the unit. second removably on top area. has upper section having oppositely outer surfaces, surface being above permanently defining plurality closely spaced regions are interconnected by channels below surfaces regions. like deep recesses, each recess constituting inside corresponding region, recesses shallow channel. lower essentially sealed to in such manner that communicate other.