This is an ISUKA sleeping bag, the Alpha Light 1100. It's a model with a limit temperature of -12°C. I weighed it on a scale, and it was about 1900g. Since it's synthetic fiber, it's larger and heavier compared to down, but I think synthetic fiber is sufficient for car camping or camping, not for mountain climbing. Also, how about preparing for disasters? There are no noticeable stains, and I subjectively feel it's clean. Please consider purchasing, understanding that it is a used item. - Model Name: Alpha Light 1100 - Brand: ISUKA - Color: Blue - Inner Color: Black - Type: Sleeping Bag ISUKA Sleeping bag Alpha Light alphalight alpha light Type: Mummy type Features: For winter