This product is either discontinued or we cannot get that from suppliers.
Poly Plantronics Spare 211424-01, Ear Cushion, Black, Designed for SAVI W8210 and W8220, Replacement ear cushion.
The Poly/Plantronics Spare Ear Cushion 211424-01 is a replacement part and accessory which is specifically designed to suit SAVI W8210 and W8220.