Material: the horizontal style is oxford plaid fabric, and the vertical one is bark configuration waterproof canvas. lightweight, waterproof, indestructible, durable, especially easy to wash. Dimension: B4 size, 2 styles to choose from, horizontal(39*31*8CM) Application: multifunctional, large ability. 2 layers handbag, main pocket is suitable for laptop, IPAD, books, documents, contract, ect. And also another mysterious pocket on it with zipper, satisfy your work needs to the fullest. Quality: Strict bottom edge and handle stitching technology prolongs the service life of the bag, the meticulous process improves the durability of the bag. Department: suitable not only for salaryman, but also ideal for student. Unisex suitable for women and men. Good gift for friends, child, colleague.