The ultra lightweight and extra packable Burton AK BK Down Insulator Jacket is the ultimate companion for any of your extra cold adventures. Whether you're wearing it under a shell, storing it in your pack as an emergency layer, or just strolling around town, there's one thing thats guaranteed: warmth. This down jacket features weather repellent ripstop fabric and ultra premium 600 down for breathable, radiant heat. If you ride warm, use the venting Pit ZipsTM for a quick release of excess heat. A zippered chest pocket is the perfect solution for storing your valuables. Whatever you do, don't leave behind this jacket, you'll regret it if you do. Features: Lightweight 20D Ripstop DWR coated fabric 9010 Ultra Premium 600 down fill Fleece lined handwarmer pockets Venting Pit ZipsTM Thumb holes Zippered chest pocket akTM Fit A performance oriented, articulated fit with cutlines and patterning engineered to mimic the body s natural flex while riding and hiking. The result is a higher degree of mobility that enhances the function first design and style of akTM.