Experience unparalleled warmth. There is finally an ear warmer that is comfortably secure, warm and attractive. This product is constructed from wind-resistant Polartec Wind Pro for the latest in wind protection. Utilizing a custom fit technology, 180s ear warmers adjust to fit any size head. The 180's also collapse for easy storage. They are very comfortable, secure, and light weight. There is even a place for stereo headphones. These ear warmers will not come off when you are running.