Material: Soft foam, designed to provide comfort during extended periods of use. Compatibility: Specifically made for the Plantronics Blackwire C320 series headsets, but may also fit other models with similarly sized ear cups. Purpose: These cushions help enhance comfort by reducing pressure on the ears and providing better sound isolation. They can also replace worn-out cushions to maintain audio quality. Size: Designed to fit the over-ear cups of the Blackwire C320, ensuring a secure fit for optimal performance. Color: Black, which matches the headset design.