?Advantages comparing with the traditional down pants ? If you want to put on the traditional down pants during the activity, you have to remove your boots or crampons first. It's not practicable in some harsh condition. ? By using several pieces of zippers, Ice Flame down pants could be put on/put off without removing shoes/crampons, which is more efficient and avoids body heat loss. ? Moreover, Ice Flame down pants is versatile. it could be transformed to a down comforter to enhance sleeping system. Features: ? 1. multi-functional: can be transformed into down pants, down comforter or even a down skirt depends on use scenario. ? 2. user-friendly： It could be put on without taking off shoes or crampons ? 3. versatile: good for daily life, camping hiking, climbing, mountaineering