GUARANTEE for YOU: We are committed to providing you with first-class quality assurance. If you have any quality problems with leight replacement ear pads or are damaged during transportation, please contact us in time, and we will solve the problem for you as soon as possible. WIDE COMPATIBILITY: These quiet comfort replacement ear pads are versatile and compatible with QC 2, QC 15, QC 25, QC 35, SoundTrue and SoundLink AE2 over-ear headphones. Please confirm the model before purchg ear pads memory foam. INSTALLATION INSTRUCTIONS: Please follow these steps: 1.Remove the old ear pads 2.Remove the old dustproof scrim 3.Peel the adhesive from the new dustproof scrim 4.Apply new dustproof scrim inside the ear cup 5.Install the new earpad by clipping it to all plastic hooks. If you have any problems, please feel free to contact us. SOUND ISOLATION EFFECT: This qc25 replacement pads can effectively block external sound, retain the original sound of the headset, reduce noise, even if you are in a noisy environment, the qc35 ear pads can still give you a quiet world. COMFORTABLE MATERIAL: Our headset earpads, made of high quality leather and memory foam, are soft and comfortable, and can quickly return to their original shape after being pressed. At the same time, the headset padding can reduce the friction with the ear and wear it without any pressure.