The Klim Balaclava meets the needs of a wide range of riders today. The lower half is constructed using Gore Windstopper for complete protection from the wind while the upper half is constructed with Coolmax reducing heat under your helmet and controlling moisture from sweating. A lycra stretch back panel along with ergonomic patterning has created a perfect fitting balaclava. This technical head sock is guaranteed to be the most comfortable head sock you have ever worn.