I purchased this at the regular price about 10 years ago. I used it during a motorcycle tour of Hokkaido for the first two years. It shows some signs of use, but it's in good condition as you can see in the photos. Features: The ISUKA "Air 450" series is a lightweight, high-performance mummy-type sleeping bag that uses 450g of high-quality 750-800 fill power down, suitable for spring, autumn, and 3-season use (especially in mountainous areas and cold regions in summer). The minimum usable temperature is about -6°C, and it weighs about 800-900g, making it lightweight and compact for storage, perfect for mountaineering, camping, and car camping. Down amount: 450g (750-800 fill power) Usable temperature: -6°C ~ (suitable for cold regions and high altitudes in winter) Weight: Approximately 800g~900g Storage size: Approximately 14 x 33cm Material: Uses high-quality, lightweight nylon material. Construction: Adopts a 3D structure, providing a high degree of fit and heat retention. The "Air 450" is a standard model that is particularly highly regarded by outdoor enthusiasts who want to protect themselves from the cold in spring and autumn, thanks to its high heat retention and compactness. Thank you for looking. I have other items for sale as well. Thank you.