The RS120 ear pads are compatible with Sennheiser models: RS120, HDR120II, and RS110 wireless headsets. Made with high-quality synthetic leather material and a highly elastic sponge, these ear pads are comfortable and easy to install. Featuring memory foam for durability and long-lasting performance, these replacement ear pads offer a reliable fit and improved comfort. This product is an aftermarket accessory and is not affiliated with or endorsed by Sennheiser. If the ear pads do not fit your device, please reach out for assistance. These ear pads come with a satisfaction guarantee, offering a refund or replacement within 90 days, along with a 180-day warranty for added peace of mind. For any inquiries, feel free to contact the seller through Amazon messaging.