This bag is made of leather material, with stitching using first-layer cowhide. Cowhide is sturdy and durable, and the longer it is used, the more charming it becomes. Leather is mainly associated with nobility, stability, and maturity in people's minds, which is very similar to the personality of business people. At the same time, the inside of the bag is double-sidedly padded with very fine and dense fluff, which feels soft and smooth to the touch and provides excellent protection for computer screens.