The quality of the cushion is very good, because there's nothing to complain about. Exact size, nicely toned and simultaneously angehmer seat. As with the originals. However, the attachment was with my hd515 a true horror, without instructions provided is for everyone a nice adventure in your own home :) Also on the Internet I could not find any instructions or videos to attach. With patience and a lot of brute force, then I've done it at some point. This is not because the cushions but on the design of the headphones, there is unfortunately no alternatives. The quality of the product is superior in any doubt.
