I am selling this backpack because I bought a similar one last year. I used it for about a month, so there is some wear on the adjustment part in the center (see photo 5). It comes with a warranty, which is valid for one year. From the website: The "UNION" series is a backpack series with a distinctive form, featuring multiple functional pockets on the exterior, inspired by workwear and tool belts. The main material is polyester canvas, which is lighter than cotton and less prone to fading. The distinctive front pockets, inspired by workwear and tool belts, feature rivet details and an eye-catching green name tag. - Color: Black - Material: Polyester Canvas - Number of pockets: 4 - Style: Backpack - Strap type: Adjustable straps Retail price: ¥23,100 Thank you for looking.