Ear piece for a hearing device

A set comprising four or more ear pieces for a hearing device for one ear of a user, wherein each ear piece has one of two, three, four or more shapes different from the shape of any other ear piece of the set, wherein the ear pieces comprise a tube having a first bend separating two essentially straight sections of the tube which smoothly merge into one another at the first bend, wherein each section has a respective centerline,

• wherein the shapes of each of the four or more ear pieces are determined based on a statistical shape model,
• wherein the centerlines enclose an angle between them, wherein the angle is in a range of 41° to 58°,
• wherein the centerlines meet at an intersection point lying within a bend plane having a plane area confined by the tube,
• wherein the bend plane bisects the angle with a tolerance range of 5% and/or is rotated within the tube about the intersection point so as to minimize the plane area,
• wherein the plane area is in the range of
• 44 mm2 to 53 mm2 for a first shape,
• 53 mm2 to 67 mm2 for a second shape,
• 65 mm2 to 83 mm2 for a third shape, and
• 73 mm2 to 92 mm2 for a fourth shape, and
• wherein the angle is in the range of
• 42° to 47° for the first shape,
• 51° to 58° for the second shape,
• 41° to 46° for the third shape, and
• 41° to 46° for the fourth shape.