I purchased a pair of Sony MDR-RF820RK Comfort Design Wireless Headphonesand they arrived today. I was reading the manual and it said I could replace the ear pads once they have worn out, or become dirty.
The ear pads are not commercialy available. You can order them from where u ordered your headphones, or your nearest sony dealer.
I got my headphones from Amazon. Here is a link-
Where can I get a pair of ear pads from???