This jacket is filled with a remarkable synthetic material called Mimic Gold, which – as the name suggests – emulates the warming qualities of down, but also adds superb performance in wet conditions. Strategically-placed non-quilted areas allow for greater ease of movement but are insulated with synthetic sheet - meaning no cold spots. The jacket also features stretch fleece inserts under the arm and at the wrist cuff, for stretch and comfort. Made with DWR-treated Pertex® shell fabric.