Stackable chair with arm rests

A stackable armchair moulded in a single piece from plastics material, said armchair comprising a seat, a back, front legs, rear legs, and a left arm rest and right arm rest respectively positioned at the corresponding sides of said seat, each of said legs having an outwardly directed channel therein extending along substantially the length thereof and defining rearward and forward edge portions for each of said legs, the forward edge portion of each of said rear legs and the rearward edge portion of each of said forward legs extending upwardly beyond said seat at opposite sides of said seat to form rearward and forward portions of the corresponding arm rest, each arm rest having a downwardly opening substantially U-shaped trough extending between said upwardly extending leg portions and forming the top of the arm rest, one armrest and corresponding trough being slightly narrower than the other arm rest and corresponding trough so that the narrower arm rest of one chair will fit in the wider arm rest of an adjacent chair, said rearward edge portions of said rear legs being extended upwardly to form the sides of said back, and said arm rests being connected with said back only by said seat.