Well polyfill is certainly an excellent material, when used with a sealing cloth as the leather you used!! Velour doesn't seal, polyfill sounded horrible... no bass, shrill highs, it was really ugly. But cotton in velour is 90% comfortable as polyfill yet keeps the bass and sweetens the sound (compared to the stock vinyl pads my samson SR850 -superlux HD668b OEM- comes with)
Well, that's another combination to try in the future, leather + polyfill.
Edited by vodkex - 7/20/11 at 8:58am