Thank you for viewing. Plus Mouth Backpack (L) Mustard I purchased this online about two years ago and used it a few times, but it didn't quite feel like it fit my body, so I left it at my parents' house. Please purchase only if you understand that this is a used item. The following is an excerpt from the manufacturer's website: A backpack that is sturdy and easy to open and close the zipper by inserting a frame around the main zipper. Durable main material, robust and durable 1680 denier nylon. Water-repellent finish. A lightweight aluminum frame keeps an elegant silhouette. Sturdy opening, aluminum frame adopted. An aluminum frame in a U-shape is inserted along the main zipper to reduce the collapse of the main body. The shape of the opening is firmly maintained even when opening and closing the zipper, so the zipper is easy to pull and the luggage is easy to take out. Moreover, it is lightweight despite having a frame because it is made of aluminum. Smart FUNCTION, easy to store even with a frame PC pocket, with a PC pocket with cushioning material inside the main body. The pocket bends and the opening opens wide, making it easy to store a PC even with a frame. The main room has mesh pockets and small pockets for neat organization. You can use the loop on the back to pass it through a carry handle and carry it together. Material: 1680D nylon Bag size: Width 32cm x Height 45cm x Depth 13cm PC storage: Width 29cm x Height 44cm x Depth 2cm Specifications: Front pockets: 2 zipper pockets Main room: 2 small pockets, mesh zipper pocket, PC pocket Back: Carry loop Weight: 900g