ISOtunes DEFY Slim Replacement Gel Cushions offer superior comfort. Packaging includes 2 replacement gel ear cushions. 

DEFY Slim Replacement Foam Cushions fit the ISOtunes Sport DEFY Slim BT and DEFY Slim. For regular users, we recommend replacing ear cushions every 1-3 months depending on the frequency of use.

Compatiable with IT-40 and IT-43