Premium Replacement Ear Pads Compatible with Sennheiser HD 4.40 Bluetooth and HD 4.50 Bluetooth Noise Cancelling Headphones (Black). Premium Protein Leather | High-Density Foam | Easy Installation

Premium Replacement HD 4.50BT HD 4.50 Ear Pads Cushions Compatible with Sennheiser HD 4.50BT HD 4.50 HD 4.50BTNC HD 4.50SE HD 4.40BT HD 4.30G HD 458BT HD 400S HD 4.20S and HD 350BT Headphones

Sennheiser Consumer Audio HD 450BT Bluetooth 5.0 Wireless Headphone with Active Noise Cancellation - 30-Hour Battery Life, USB-C Fast Charging, Virtual Assistant Button, Foldable - Black

NewFantasia Replacement Audio Upgrade Cable for Sennheiser HD4.40, HD 4.40 BT, HD4.50, HD 4.50 BTNC, HD4.30i, HD4.30G Headphones 1.2meters/4feet