Geo-Matt Contour Seat Cushion 46 X 46 X 7,6 cm Foam - 6 Count CaseSeat Cushion Geo Matt Contour 18 W X 18 L X 3 D Inch Foam Patented Geo Matt anti shearing layer on top, firmer contoured base below creates outstanding positioning and effective pressure relief in one Base features contoured leg channels, abduction adduction build up, and pelvic bucketing to help discourage slouching Standard cover consists of anti slip top surface and nonskid bottom Built in sleeve in bottom of cover allows use of molded Sling Fill