During the design process, we always aim to make the custom tips as flushed to the ears as possible. Depending on the ear shape/size in combination with the chosen IEM's shape/size/angle, the level of protrusion will differ from each set of Eartune Fidelity custom tips. Since the ear size and IEM size is something we can not change, the received design is the best solution we can offer without compromising the secure retention of the IEMs.