Mixed mailers: 100 s in 1 bundle and 25 s of each size. 4 SIZES 17 * 23cm / 23 * 30cm / 30 * 40cm / 35 * 45cm, the size of the package depends on what you are sending. These s are very difficult to open, so your items can arrive safely without the risk of being oped or tampered with. Packing materials, these are high quality plastic s made of polyethyle. Not only waterproof, thicker than the market, wear-resistant, but also durable and long-lasting, does not ride or emit any smell or smell of smoke. Works as a safety or shoulder for textiles, clothing (jeans, jerseys, shirts, t-shirts). Easy to handle: Plastic mailing s are self-adhesive for easy handling with rub-off adhesive strips, strong adhesion and easy-to-close plastic mail s. They are also lightweight and save moy. Moy by reducing shipping costs. Multipurpose: Perfect for shipping, shipping, wrapping, mailing envelopes, shipping and wrapping packages, clothing and gifts. Used mailing s can be used as gare s in order to realize the secondary consumption of resources. Note Please keep your distance from your children, these are not children's toys, thank you. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin