Office computer chair coverThe trumpet waterproof Armchair sets Applicable size of chair cover: S Seat back height: 45 56cm Seat back width: 42 55cm Chair length: 38 55cm Chair width: 38 55cm Medium size waterproof armchair cover Applicable size of chair cover: M Seat back height: 57 65cm Seat back width: 42 55cm Chair length: 38 55cm Chair width: 38 55cm Chair thickness: 6 10cm Large waterproof Armchair sets Applicable size of chair cover: L Seat back height: 70 80cm Seat back