Unlock the ultimate in lightweight warmth with the Men's Burton [ak] BK Lite Insulator. It features the same responsibly-sourced ultra-premium 800 RSD down fill found in the infamous Burton [ak] BK Down Insulator and packs it into a quilted block pattern featuring an articulated fit and stretch fabrication. This reduces size and weight and ensures freedom of motion where you need it most. All colorways are bluesign® approved for a reduced impact on people and the planet. Built with layering up or down in mind, the BK Lite also packs into its own pocket for quick and convenient storage.