... dust cap: 25-50g. polypropylene non-woven 2. earphone dust cap, mike cap, headphone cap 1. disposable earphone dust cap: 25-50g. polypropylene non-woven 2. earphone dust cap, mike cap ... , headphone capDISPOSABLE PP EARPHONE DUST CAP ... , non-toxic, dust-proof, replaceable, ...