This is the Flash 45 Limited Edition Backpack, brand new with tags. It is perfect for overnight backpacking trips, weighing just 2 lbs and is a size medium. If you have questions about the functions and features of this bag, please refer to this link or leave a comment and I will answer to the best of my ability! https://www.rei.com/product/862884/rei-co-op-flash-45-pack