This is a women's sleeping bag, the Sea to Summit Frame 1 FmI. I bought it three years ago for a summer traverse of the Northern and Southern Alps for about 30,000 yen, but I bought a quilt type afterwards, so I stopped using this one and am now selling it. Used about 3-4 times. The down looks flat because it was taken out of the compression bag just for the photos. It has been home-cleaned with a special down detergent. The compression bag has deteriorated slightly due to being taken in and out. (See image 7) ---Excerpt from HP-- Insulation has been added to suit the female body. You need a high-performance sleeping bag, but you don't want it to be heavy. The Frame series is the one to choose in such cases. Ultra-lightweight and technical. The Frame series is a series that thoroughly pursues lightweight and compactness while maximizing insulation. It can be used as an ultra-light liner, or it can be used for a wide range of applications, such as for expeditions in the dead of winter, taking advantage of its lightness. Even if the usage scenarios are very different, the design philosophy of "suitable for the climate and the lightest class" is firmly reflected. ■Specs■ ◇Temperature range (EN13537) ・Comfort temperature: 9 degrees (Celsius) ・Limit temperature: 4 degrees (Celsius) ・Extreme temperature: -10 degrees (Celsius) ◇Zipper type: Half-length ◇Down spec: 850+ fill power 90/10 ULTRA-DRY premium goose down ◇Composition: ・7dn ultra-lightweight nylon (lining) ・10dn ultra-lightweight nylon (shell) ◇Size/Suitable height: ・Regular/up to 170cm ◇Sleeping bag weight/Down amount: ・Regular: 350g/190g ◇Storage size: ・Regular: 11 x 17cm ◇Accessories: Lightweight Ultra-Sil compression bag