Thor conjures up images of Ominous clouds, lightning, and chariots riding through fiery skies. Kuhl honors the Norske God of Thunderstorms with this style. The Thor design is cut from our exclusive Thermokore fabric - a durable blend knit outer layer which is bonded to Kuhl's Microchamois fleece. Light weight underarm gussets keep you comfortable in a wide range of conditions.