I received a sample from the manufacturer and used it only a few times before storing it at home for a long time. There are no noticeable stains, and it's still usable. For those who understand that this is a used item, thank you. Salomon blue nylon backpack With mesh pockets - Color: Blue - Material: Nylon - Design: With mesh pockets - Interior: Lined - Size: 42cm x 27cm x 11cm Thank you for looking.