I think this is unisex and can be used regardless of age. I used it for about a month when I bought it, and it has lost its shape a bit because I've been storing it. There are no noticeable stains or scratches on the visible parts of the bag, but there are some minor scratches on the bottom. They are on the bottom gusset, so they are not very noticeable, but it seems that they can be made even less noticeable with a leather cleaner. Please refrain from purchasing if you are concerned. The size is 23 cm in height, 25 cm in width, and the belt length is 50 cm. Please allow for slight variations.