An ear strap (2) is disclosed. The ear strap (2) comprises attachment means (6, 30) configured to be attached to a tube (4). The ear strap (2) has a flexible member (3) configured to be placed within the concha (18) of the ear (16) and to be held in place by the concha (18) of the ear (16). The flexible member (3) is configured to take a form that fits the shape of the concha (18) of the ear (16). The ear strap (2) comprises means (8, 10, 12) for adjusting the position of the tube (4) relative to the attachment means (6, 30).
