This product is either discontinued or we cannot get that from suppliers.
Poly Plantronics Spare Kit 87527-01, Foam Earloop, Designed for W440 and W740 Wireless Headset, 20 pieces of durable earloop cover made up of foam.
The Plantronics Earloop Foam Cover 87527-01 is a spare kit consisting of 20 Units of earloop cover made up of high quality foam that suitable for W440 and W740 Wireless Headset.