Comfortable&Noise Cancel GreatIt fits flawlessly and is extremely comfortable, and doesnt compromise the noise cancellation at all. Whether you use your headset for both long and short haul flights, or fly on helicopter or extremely loud Air Force jet, this A20 ear cushion works just fine and noise cancellation great.Durable&As Good As The OEMThey look and feel just like original a20 replacement ear pads. After several hundreds of flight hours, they are still performing as new, and you won't see any sign of wear.Compatible Headsets Aviation X ear cushions ONLY compatible with Bose A20 A10 Aviation X Headsets. NOTE: the foam inserts are for Aviation X, NOT for A20.Affordable Replacement PartsThese are great alternative for the very expensive original aviation headset replacement parts, they are in some ways more comfortable than the original parts, the leather is good quality, fit is excellent. About 1/2 the price of OEM replacements.