Thank you for viewing. I've used this a few times for field trips, etc. I think it's generally clean since it hasn't been used much, but there's a little dirt on the corners of the bottom. (Please check the 10th photo) The zippers and buckles work without any problems. This was used by a child, so it's not like new. Please understand this before purchasing. Please refrain from purchasing if you are sensitive to such things. The depth can be adjusted with a zipper. Width: 25cm Height: 32cm Depth: 11-16cm Capacity: 8-12ℓ #MotherGarden #Backpack #SchoolBackpack #FieldTrip #mothergarden