Bag (English: bag), that is, handbag, includes wallet, key bag, coin purse, clutch bag, handbag, backpack, schoolbag, satchel, briefcase and so on. It is not only used to store personal belongings, but also reflects a person's identity, status, economic situation and even personality. Carefully selected leather bags have the function of making the finishing point. It can decorate you as a real white-collar woman. A handbag (pí bāo) refers to a handbag made of leather, which belongs to daily necessities. A leather bag is a steamed stuffed bun made of genuine leather or artificial leather. Real leather bags are relatively noble, mainly including: money bags, document bags, book bags and so on. According to the gender of users, it can be divided into men's wallets and women's wallets. Generally, leather bags are relatively small in size, mainly for more expensive things. Aniline leather, the surface of which is coated with aniline, is characterized by crystal clear surface, but it is not dazzling and has strong plasticity. Natural leather is boiled into leather. Cowhide is generally 5 ~ 6mm thick, and the surface layer is granular. Tissue fibers are fine and dense, smooth and beautiful, with good strength and wear resistance. The inner layer is a pile layer with thick fibers, large gaps and fluff on the surface. The surface of the first cortex is smoother than that of the second cortex, and the second cortex is slightly rough. After finishing, transfer film or film pasting, the surface of the two-layer leather is not rough, but the transfer film leather has poor low temperature resistance and is easy to wrinkle at low temperature. The second layer of cowhide has a smooth surface and no obvious defects after embossing, while the second layer of pigskin often has three piles of faintly visible pores, where the luster is dark. When distinguishing between shaved leather and front leather, it should be noted that shaved leather is a pattern that destroys the original grain surface and then presses it on. The pattern can be cowhide, sheepskin, pigskin, etc. However, the pattern has no pore eyes, and the pattern floats on the leather surface, while the pore eyes of the front leather exist, which can be identified by careful observation.