Size: 30 x 19 x 52cm, 30L It has many small pockets and is convenient. The back is mesh for breathability. A rain cover is built into the bottom (photo 7). I used it twice on Mt. Fuji and once on Mt. Tateyama. Since it's for mountain climbing, there may be scratches in places you can't see, but it looks clean. Please consider that it is a used item before purchasing. Material: Water repellent Size: 30-45L