I've been using this for about two years, but I haven't been using it much since I started prioritizing the bag I'm used to, so I'm putting it up for sale. I'm considering reusing it. Purchased from the Men's Bigi main store Yahoo! shop. Pack. The material is highly water-repellent, so you can carry it with confidence even on bad weather days. Main compartment: Can store laptops and tablets like iPads, a large-capacity backpack. The front storage has convenient small pockets for storing smartphones and small items. Very convenient for storing small items like commuter passes. The PC holder in the main compartment can also be taken out from the back storage. The ability to take it out while wearing it is a great feature. There are two pockets on the sides that can store 500ml plastic bottles, water bottles, folding umbrellas, etc. The back uses thick mesh cushioning, making it less prone to stuffiness and fitting snugly against the back. Color: Black Material: Leather model: Synthetic leather (PU leather) Cordura model: Body/Cordura nylon Shoulder, handle, zipper edge, side pocket/Synthetic leather (PU leather) Size: W290 / H460 / D160 [mm] Weight: Leather model: Approximately 990 [g] Cordura model: Approximately 945 [g] Country of origin: China If this is an authentic product, there is a warranty service that provides free repairs if the product is damaged, but I have used it for 2 years and have never had any damage. Of course, it is an authentic product, so the repair service is available. Suitable for both on and off use. Please understand that this is a used item with 2 years of wear, and I would be happy to pass it on to someone who does. The YKK zipper makes it easy to open and close.