Introducing Advanced Mountain Kit. The most sophisticated alpine climbing system The North Face has ever created. A specialist series, AMK incorporates apparel, accessories, and equipment. Collaborating with elite athletes, designers, and innovators, the collection redefines high mountain performance. Rethinking the needs of the world\'s best, Advanced Mountain Kit enables alpinists to push the limits of their potential.Built for extreme alpine conditions, the AMK L5 Jacket is the protector in your layering system. Made with TNF\'s revolutionary FUTUReLIGHT, it blocks the elements without compromising breathability. The face fabric has added elastane for mechanical stretch, enabling fluid climbing movement. Sleek and streamlined, articulated patterning ensures layers fit comfortably underneath.