These earmuffs are lightweight, adjustable, and won't slide off like bands or scarves. They also won't pull hair like tight bathing caps do. They are designed to keep professional ear molds, plugs, or wax molds in place. The inner soft foam lining contours to the shape of the ear, gently holding the ear mold where it belongs. The outer shell has straps with an adjustable buckle for sizing, and the inner foam snaps out of the shell for quick drying.