You'll have to replace the earpads, and try and maintain any replacement by wiping them down:
As for the headband, unfortunately those are not replaceable, and we suggest getting an aftermarket headphone headband strap to wrap around it:
Like
THIS.
For cleaning/maintenance:
We suggest wiping down earpads, headbands, and exterior parts with a clean dry cloth for regular maintenance. You can use
a little water if it's needed for mild cleaning.
For deeper spot cleaning: you can moisten a clean, lint-free cloth or cotton swab with a little water mixed with a
very small amount of mild soap (such as dish or hand soap). Once cleaned, wipe with a fresh cloth moistened with water until no soap residue remains, then dry with a clean dry cloth. You can also use a little rubbing alcohol followed by a dry cloth. Be aware that these treatments will leach oils from leather, so you should follow up with some leather conditioner to replenish and moisturize.
If you have real leather pads, you can use any quality leather conditioner a few times a year to rehydrate, but we suggest using this very sparingly to avoid buildup.
We don't recommend spray cleaners or deodorizers since it's hard to control where they spray, and they may contain chemicals that can harm the diaphragms or other parts. Be careful to prevent getting any liquids inside the driver elements or on the bare metal parts, since that can cause damage not covered by warranty.
For those who live in humid environments, we recommend wiping down the headphones to dry them after each listening session, and storing them with a de-humidifier nearby. You can also store them in their case with silica gel packets, just be sure the headphones are completely dry before storage, and remember to change the gel packets occasionally.