Combined ice chest, seat, life preserver, and reversible back

Claim 1

A COMBINED ICE CHEST AND SEAT COMPRISING A UNITARY OPEN-TOPPED BOX FORMED AS SIDE AND END WALLS UPSTANDING FROM A BOTTOM WALL AND MADE OF HEAT-INSULATIVE MATERIAL, RIBS UPSTANDING FROM THE INNER SURFACE OF SAID BOTTOM WALL, RESPECTIVELY RUNNING PARALLEL TO AND EACH SPACED FROM BUT ADJACENT THE INNER SURFACE OF ONE OF SAID SIDE WALLS, A BACK REST WALL MADE OF HEAT-INSULATIVE MATERIAL, THE LOWER EDGE OF WHICH FITS BETWEEN A SELECTED ONE OF SAID SIDE WALLS AND THE RIB ADJACENT THERETO, SAID BACK REST WALL HAVING A RIB EXTENDING PARALLEL TO ITS BOTTOM EDGE, A BACK REST CUSHION SECURED TO SAID BACK REST WALL ON THE SAME SIDE BUT ABOVE SAID RIB, REINFORCING RIBS EXTENDING FROM THE OTHER FACE OF SAID BACK REST WALL AND DEFINING AN OUTWARDLY-OPENING RECESS, A SEAT WALL MADE OF HEAT-INSULATIVE MATERIAL, WITH A REINFORCED FRONT EDGE PORTION FORMED WITH A DOWNWARDLY-OPENING GROOVE TO TELESCOPE OVER THE TOP EDGE OF A SELECTED ONE OF THE BOX SIDE WALLS AND END FLANGES TO OVERLAP THE TOP EDGES OF THE BOX END WALLS, THE REAR EDGE PORTION OF SAID SEAT WALL RESTING ON THE FIRST-MENTIONED RIB OF THE POSITIONED BACK REST WALL, AND A SEAT CUSHION SECURED TO THE UPPER SURFACE OF SAID SEAT WALL.