This is a square backpack similar to The North Face's Fuse Box. I've included a measuring tape in the photos for size reference. I bought it thinking it would be good for touring, but I haven't had a chance to use it, so I'm selling it. I used it only once for a short time, and it's in excellent condition with no noticeable stains or scratches. Please understand that this is a used item, and refrain from purchasing if you are looking for a new item. Thank you for looking.