ISOtunes TRILOGY ™ AIR DEFENDER Hygiene Kit offers a trifecta of benefits for optimal hearing protection: superior comfort, noise isolation, and sound quality. Packaging includes 2 ear cushions, 2 outer fabric replacements and 2 foam ear cups. 

AIR DEFENDER Hygiene Kit is compatible with the ISOtunes AIR DEFENDER. For regular users, we recommend replacing ear cushions, fabric lining, and foam inserts every 1-3 months depending on the frequency of use.