Amazon.com: Replacement Heaphone Ear Pads Cushions for Sennheiser HD4.50BT HD4.50BTNC HD4.40BT,Headset Earpads for Sennheiser with Durable Leather and Comfortable Sponge-Black Color : Electronics
Sennheiser HD 4.50 Ear Pad Replacement - iFixit Repair Guide