The Burton AK Oven 3L GORE-TEX Mittens System is a three-piece mitt system with a storm worthy 3-layer GORE-TEX Pro shell, removable down insulated liner mitts, and touchscreen compatible [ak] Helium liners. Layer ’em up based on conditions, and rest assured that your hands are enshrined in a fortress that’s not only toasty warm, but guaranteed to keep your hands dry and happy in even the nastiest of conditions.