ReSound RIE Mic Filters (packs of 8 ) – £7.95 for a pack of 8 mic filters. Discounts available when purchasing multiple packs as below, free shipping is standard. These ReSound RIE Mic Filters are suitable for ReSound Vivia RIE hearing aids only. 2 Packs = 10% Discount 3 Packs = 15% Discount 4 Packs = 20% Discount N.B. The packaging for this item look the same as similar wax and mic guard products available for other manufacturers. Please note that Cerustop, Starkey Hearclear and Signia wax Guards are NOT interchangeable. Please note – we only ship to UK postal addresses.