Backpack for Men and Women, Business Backpack, Rucksack, Large Capacity, Waterproof, Water-Repellent, Lightweight, Slim, Fits 15.6-inch PC, A4 Storage, Commuting, School, Business Trip, Travel, Casual, Stylish, Unisex [Color]: Black Simple design, easy to use! This large-capacity rucksack backpack is suitable for men, women, and all genders. Perfect as a sub-bag for business trips and travel. It's a versatile bag that can be used for commuting, school, and more. It also features a carry-on function that allows you to attach it to a suitcase. Made of ultra-lightweight and durable polyester material, it's also waterproof, so it's okay if it gets a few water droplets on it. A4 magazines can also be stored. It has pockets on the front and sides, and a large-capacity design with high storage capacity. It has a handle on the top, and it's a 2-way specification that can be carried by hand or over the shoulder. The shoulder straps are highly cushioned and adjustable in length. [Opening]: The top zipper makes it easy to take out and open and close the contents. [Outer Pockets]: There are two zipper pockets on the front. Convenient for storing items you want to take out quickly. There are side pockets on both sides. [Back]: There is a belt to insert into the handle of a suitcase and secure the bag. [Inside]: The main pocket can easily store A4 magazines and a laptop of about 15.6 inches. It has more storage capacity and usability than it looks. [Main Material]: Polyester *The color may differ slightly from the actual color depending on your computer environment. [Size]: Width: 30cm, Height: 45cm, Depth: 12.5cm, Width of the back through hole: 23cm [Weight]: 420g [Number of pockets]: Outer: Zipper pockets (x2) on the front, Side pockets (x2) / Back: Suitcase fixing hole.