This is an O'Neill trail series backpack. I purchased it in the US about 3 years ago and have used it about 7 or 8 times. I don't know the liter (L) capacity, but the approximate size is 60cm (height) x 40cm (width) x 21cm (depth). I think it's probably around 50-60L. It has about 10 pockets, and the large pocket on the very top is waterproof. There are some white stains. Please check the photos before purchasing! I think it was about $150 (¥23,000) in US dollars. #O'Neill #Backpack