A support pillow comprises a cushion body having a medial region and two opposing arms that define a generally open well, with the cushion body having an outer periphery and an inner periphery adjacent the well. A shell encompasses the cushion body. A fabric cover is removably disposed over the shell...http://www.google.sh/patents/US7000274?utm_source=gb-gplus-sharePatent US7000274 - Slipcovers for support pillows
