Compatible with Sennheiser HD 4.50BT, HD 4.50, HD 4.50BTNC, HD 4.50SE, HD 4.40BT, HD 4.30G, HD 4.20S, HD 458BT, HD 450, HD 450BT, HD 400S, HD 350BT Headphones. Protect your headphones from wear and tear with the durable protein leather soft foam Ear Pad Cover. Upgrade your headphones with Ear Pads for ultimate comfort. Experience effective noise isolation while wearing your headphones