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My foam or cushion piece is damaged. Can the part be replaced?

Yes you can Beat buy, amazon bose official site. All have replacement pads. https://www.bose.com/en_us/products/headhttps://www.bestbuy.com/site/bose-quietc… Replacement Ear Cushion Kit/Ear Pads Compatible with Bose Quiet Comfort 35 (QC35) & QuietComfort 35 II (QC35 II) Headphones, Black https://www.amazon.com/dp/B07N583YV2/ref