For all season hiking, 6000m-level mountaineering, Fast alpine style mountaineering.

There are no “sewn through” seams, box structured in all area.

Constructed with high quality duck down (700 FP) treated by water repellent which stays dry 90% longer than untreated down. To a certain extent, the problem of getting wet in night can be reduced.

Vertical baffles keep down from migrating to the sides. Tightly spaced compartments help keep the down evenly distributed, the bag is shaped by human body, so there are no cold spots.

The rectangular foot box is roomy, and fits the shape of your feet comfortably. The top zipper is very convenient to enter or exit the sleeping bag.

The outer shell is 15 denier ripstop fabric with durable water repellant, high density fabric with breathable coating cuts winds perfectly can also allow vapor transfer and breathability. The inner shell is breathable and skin friendly soft nylon.

The environmentally friendly water repellant is used in water resistant after process which without PFOA and PFOs.

Compression bag is included, this adds 48.1g/1.7oz to your list, the bag allows you compress the down sleeping bag into a small volume.