Brand new, unused. Blue系 (likely referring to a blue color scheme) Capacity: 16L Main compartment with a 2-way zipper, zippered pocket at the bottom, side mesh pockets, Cat mark and Puma wordmark on the front, adjustable chest strap for stability. Mesh on the back and inside of the shoulder straps. Authentic product purchased at a sporting goods store at the regular price. It had all the features I wanted, but I didn't have the opportunity to use it because there were no field trips. I think it's a size that's easy to use for a long time, from young children to lower elementary school students. I took it out once for the photos, but please note that it's in the same condition as when I bought it, with no creases. Size...11〜25 L