The Phonak Marvel Domes are for Phonak Marvel & Paradise RIC (receiver-in-the-canal hearing aids) Regular replacement of the domes can help avoid the build up on wax and debris in your hearing aid receiver and keep things functioning fully for optimum sound performance. Types: Open: Rounded style with holes which allow for natural sound to pass into the ear canal, usually for when low frequency hearing is good but high frequencies are drowned out. Available in the below sizes: Small = approx. 7mmMedium = approx. 9mmLarge = approx. 11mm Vented: Bud shaped style with tiny opens for ventilation, usually opted for moderate hearing loss.
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