1. UltraHeatConservation Design: Our UltraHeatConservation Design ensures ultimate comfort within a temperature range of approximately 15°C and has received exceptional ratings. The hood with an adjustable drawstring fully covers the head and face to retain warmth, while the windproof double zippers and insulated windproof collar provide additional protection against the elements. 2. Waterproof and Machine Washable: Our sleeping bags are treated with an invisible waterproof layer to keep you dry in wet weather while remaining lightweight and durable. Thanks to the tough and easytoclean materials, the sleeping bags can also be fully machine washed. 3. Super Warm Design: The sleeping bag features a duallayer filling design, making it suitable for 34 seasons. Whether camping, hiking, or traveling, this sleeping bag keeps you warm and comfortable after a day full of activities. 4. Upgraded Zipper and Inner Pocket: Our advanced zipper design ensures smooth operation when opening or closing the sleeping bag in a hurry. An internal storage pocket is integrated into the sleeping bag to keep your valuables and phone close at hand throughout the night.