※ This item is listed on Mercari. Please do not purchase from any site other than Mercari, as it appears to be copied and listed on several fraudulent websites. This is an envelope-type sleeping bag from Kojan Sanso. It seems to be a collaboration with Bergstadt. It's large, about 70cm wide and 194cm long. It can be used as a comfortable futon in the summer. When stored, it's 35cm in diameter and 40cm long. It's warm for a synthetic fiber envelope-type sleeping bag, and it was fine in some winter cold. I don't smoke. I have washed and sun-dried it thoroughly before listing. The storage bag has some stains. Thank you. Type: Envelope type Features: For 3 seasons (spring to autumn) Features: For winter