-Provides the ultimate in comfort -Fits most major brands of headsets/earseals -100% Cotton -WashableAdding earseal covers is an easy and inexpensive headset upgrade that can make a big difference in comfort. These earseal covers improve comfort by creating a soft contact surface between your headset's earseals and the area on and around your ears. Made of cool cotton cloth, they also provide thermal protection in both hot and cold temperatures, absorbing perspiration when it's hot and helping to keep ears warm and cozy in the cold. Made in Korea.