Used for about six months. I liked using it, so there are some small stains from use, but they are not noticeable, so I personally don't mind them for everyday use. (Please refrain from purchasing if you are not okay with any stains at all) It's not too casual as a backpack and can also be used for a more polished look, so I found it very useful. I'm selling it because I no longer use backpacks. Material: Recycled nylon, polyurethane Measurements: Height 37.5cm, Width 27.5cm, Bottom gusset 14.5cm This backpack is made with the highest quality durable technical materials and finished with a chic look that suits everyday fashion. It's designed with practicality in mind, including a spacious interior, various pockets, slim shoulder straps, and lightness that prevents fatigue even when worn all day long. Color: Black