These ear pads are made of high quality memory foam and are soft, comfortable, and durable. They are perfect for long-time wear, providing excellent noise isolation and reducing ear fatigue. The ear pads are easy to install and can be replaced in seconds without any tools. They are compatible with a wide range of headphones, including Sennheiser HD598, HD598 Cs, HD598SE, HD598 SR, HD518, HD558, HD595, HD599, HD569, HD579, HD560s, and more. The package includes 1 pairs of ear pads, so you can replace them when needed.