Hearing Aid Ear Piece Double Layer Open Domes 10-Pack Comfortable PSAP (Personal Sound Amplifiers Product) Kit Ear Tips Invisible, Perfect for Open Air (Open fit), Include RIC

This is a hearing aid Double Layer Open Domes set of chosgo open-air models with 10pcs of 8mm or 10mm or 12mm units.

These domes could be used with Chosgo open-air hearing aids, or Signia, Otofonix, LifeEar, Retone, Beltone, Newsound, Austar, Advanced Hearing, Hearing Assist or MD hearing aids.

This is suitable for BTE models :

V03B RIC hearing aids

V402R BTE hearing aids

Bro102R BTE hearing aids

If the ear dome is too big, your ear canal will feel pressure and will not be comfortable.
If the ear dome is too small, the sound will be leaked and you will hear a terrible squealing.
So it's important to choose your suitable size carefully in advance.
If you already know this size will be suitable for you, then please go on. 

Double Layer Open Domes
They are

8mm Open Dome
10mm Open Dome
12mm Open Dome