I believe this is a Montbell Tough Lumbar Pack, size S. The color is gray. Opening: 25 cm Front pocket is about the same size. Depth: 5 cm (main body) The belt is adjustable, so it can be used as a waist bag or a crossbody bag. It has a waterproof zipper, so it should be fine in light rain. I haven't taken it out in bad weather. I bought it to match an outdoor style, so I haven't taken it to the mountains or anything. I've used it about twice, but it was too small for me since I carry a lot of stuff. Otaku tend to have a lot of stuff. I will ship it compactly. Please comment if you would like additional photos. I think it's in good condition.