What's New in Foam Masters Version 3.0 Upgraded Premium Memory Foam. Earwax Filter Added. New NanoWeb Ultra-thin Membrane coats each Foam Tip to improve hold in ear, sweat resistance, and drastically improves durability. Adapter brackets are now installed onto the memory foam and guarantees a perfect fit onto the AirPods Pro. PREMIUM MEMORY FOAMForms very comfortably to your individual ear shape. Guaranteed to stop the ear hurting pain caused by silicone tips or we'll gladly refund your money! SUPERIOR FITMENTStays in your ears during your most intense exercises. IMPROVED SOUND QUALITYIncreases Bass Response without sacrificing clarity. PERFECT DESIGNPerfectly sized to fit into the charging case without the need of compressing or tucking in the foam. This maximizes Convenience and you will get the satisfying Snap every time you close the lid. Incorrectly sized tips result in damage to the Foam Tips caused by the case lid clamping onto the foam. 124 Perfect after-sales service: If you have any quality issues or do not like it after receiving it, please contact us and we provide free return and exchange services