Instead of a cushion, {HEAD ~ rigid side portions} can be provided on {TAIL ~ the leg portions} to act as a support 
Instead of a cushion , { HEAD ~ rigid side portions } can be provided on { TAIL ~ the leg portions } to act as a support
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH