My beloved QC15s were falling apart, below is my process to renew them.
Purchased ear pads for $13.33:
http://www.ebay.com.au/itm/182119689437 – Replacement Ear Pads for QuietComfort 2 QC2 QC15 QC25 AE2 AE2I Bose Headphones.
The ear pads simply clip off! Thanks Bose! I was expecting them to be glued, thank you again Bose, wonderful design.