misodiko Upgraded Ear Pads Cushions Replacement for Sennheiser HD600,
Amazon.com: Geekria Mesh Fabric Headband Pad Compatible with Sennheiser HD600, HD580, HD650, HD660 S, Headphones Replacement Band, Headset Head Cushion Cover Repair Part (Black) : Electronics
Amazon.com: Gvoears Earpads for Sennheiser HD650/HD600/HD660S/HD545/HD525/HD535 Headphones, Earpads Cushions also Compatiable with Massdrop X HD6XX/HD58X and HD580/HD565 Jubilee Headphones, Upgraded Velour Fabric : Electronics