Compatibility: Our ear pads fit many brands of On-ear headphones, such as Tune 450BT/Tune 460BT/Tune 500BT/Tune 510BT/Tune 520BT/Tune 525BT/Tune 530BT/Tune 570BT/JR 300BT/JR 300/JR 310BT/JR 310/Junior 320BT(JR 320)/E40BT and so on. We show all the compatible models in the list for your reference. Rugged Durability: By adding Extra Thick & High-density foam, your ears will no longer hurt even after an hour of wearing them. What's more,our thickened earpads will never go flat and cause discomfort as time goes by. Flawless Installation: Our earpads perfectly fit your headset base. No extra tool is needed and you can complete the entire installation within a few minutes. Enhanced Sound: Your old earpads negatively affect the sound quality of your headphones, while our well-maded earpads will not affect the sound performance of your headphones and make your headphones look brand-new again. WE CONTINUE TO develop more professional and ergonomic ear pads. If there is an issue with your purchase, please feel free to contact us directly. 1