The Chesterfield ear warmer features a wool shell and fleece liner that looks great and keeps your ears toasty warm. Patented behind-the-head design fits comfortably over your ears and allows them to be worn with other headwear, glasses, and head protection. Adjustable click-to-fit frames ensure an easy, comfortable fit on a wide variety of head sizes. They also collapse for easy storage in bag, briefcase, or purse. Fully adjustable and collapsible frame makes the product easy to carry and pack.