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.Innovative design meets advanced materials in the AMK Superlight 10 sleeping bag. Showcasing 1000-fill ProDown, the insulation achieves the highest possible Clo value. Warmth levels are further enhanced by the heat-reflective aluminium coated shell fabric. This results in the same heat retention as a non-aluminised version while using 20% less down. On the hood and foot, waterproof-breathable FUTUReLIGHT increases durability. Delivering outstanding performance, it helps alpinists to get the best rest possible.