COMPATIBLE WITH: Sony WH CH500, Sony WH CH510, Sony WH CH520 headphone. COMFORTABLE & DURABLE: The replacement ear pads are made of high-quality memory foam and protein leather with upgraded stitching on the inside seams of each earpad to prevent them from splitting ENHANCED SOUND: Worn-out ear cushions are affecting your headphone's sound. These earpads conform comfortably to your ears, blocking out noise for an immersive sound experience. UNIQUE DESIGN: Our replacement ear pads are made from high-quality soft foam. Why did we design them like this? To ensure they never flatten and cause discomfort. EASY INSTALLATION: Remove the old earpads. Slip & tuck the new earpad into the headphone groove. Stretch if necessary.