The ExtremeLite® series is built for hikers and climbers who count every ounce. These are the lightest sleeping bags in our lineup, with more than 12 models under 2 lbs (900 g) and multiple options under 1 lb (450 g), making them ideal for ultralight backpacking, long-distance hiking, and minimalist travel.

To achieve this balance of low weight and real-world warmth, ExtremeLite bags use premium goose down paired with ultra-light, high-density nylon shell and lining fabrics. These materials are engineered to be breathable, down-proof, and exceptionally compact, allowing the bags to pack small without sacrificing comfort or durability.

If your priority is covering ground efficiently while still sleeping warm and comfortably, the ExtremeLite series is designed to be the cornerstone of a modern ultralight sleep system.