Klim engineered the Yukon as a highly technical mid-layer & comfortable everyday pullover. Built with POLARTEC® THERMAL PRO® making it the ideal heavier-weight mid-layer insulator as well as the perfect pre & post-ride casual shirt, the Yukon provides efficient warmth with wide versatility. Features Functional on-skin technical casual & mid-layer shirt 325 gr. Polartec® Thermal Pro® insulated fleece construction Stretch Nylon overlays on shoulders & elbow 1/4 zip entry High pilling resistance Large zippered chest pocket Quick drying/moisture wicking/highly breathable Wicking 1.0 fabric in collar