This extra comfortable ear warmer from Degrees by 180s is perfect for those cold winter days. Collapsible, and made of soft poly fleece exterior. Unique fabric construction balances thermal insulation ensuring wind blocking and breathability to keep you warm and dry, together it provides you with the ultimate protection in cold climates. Adjustable, click to fit design. Works with hats, helmets and glasses. collapsible poly fleece ear warmer. One size fits Most