A headphone (3, 4) comprises a body (5) forming a chamber (26) for enclosing an ear of a user of the headphone (3, 4). The body (5) has an acoustic seal (7) of a flexible material surrounding the chamber (26), and the body (5) has a cushion (8) extending around the acoustic seal (7) and separate from the acoustic seal (7). The cushion (8) has a first side face (38) for engaging with the head of the user.