Sleeping bag weight 850g, The weight of filled down is 400g, Comfort temperature:010 degree centigrade. Sleeping bag weight 1150g, The weight of filled down is 700g, Comfort temperature:-55 degree centigrade. Sleeping bag weight 1450g, The weight of filled down is 1000g, Comfort temperature:-100 degree centigrade. Sleeping bag weight 1750g, The weight of filled down is 1300g, Comfort temperature:-15-5 degree centigrade. Sleeping bag weight 2050g, The weight of filled down is 1650g, Comfort temperature:-20-10 degree centigrade. Goose down’s warm keeping principle. Down is very soft amd small, Although it looks thin, when you sleep in the sleeping bag, the down will attract your body temperature, so that the down will expand, isolate the cold air from the outside, and achieve the effect of warmth retention. It looks thin when the temperature is low, after attracts your heat, It will thicken when the temperature is high, which is normal. The color of the storage bag is black, as shown in the picture below. The sleeping bag in the picture below is a thick sleeping bag without compression and weighs about 2400g.