GROMMET AND WIRE HARNESS

A grommet (1) includes a fitting body (10) to be fitted in a wall body (Pw), a sound insulation wall body (20) that has an annular shape and is in a space part (11) inside of the fitting body, cylinders (30, 30) that are projected from both ends of the fitting body in an axial direction and allow a harness body (We) in the space part to be drawn outward via inside of the cylinders, and an inner cylinder (40) interposed between one cylinder (30A) and the harness body, in which the cylinder having the inner cylinder interposed between the cylinder and the harness body has a first cylindrical part (31) on a free end side, a second cylindrical part (32) having a diameter larger than a diameter of the first cylindrical part, and an intermediate tubular part (33) between the first cylindrical part and the second cylindrical part. The inner cylinder (40) has a variable cylindrical part (41).