【Upgraded Design Poly Mailers 12x15.5】The upgraded design of the poly mailers with handle, not only convenient for your customers to carry around, but also saves your packing time and storage space. 【Powerful Self-Sealing and Waterproof】Our mailing bags are not only waterproof to protect the package from the outside environment, but also have a strong adhesive that reduces the chance of product loss. 【Durable Protection & Privacy-Protection】Our heavy-duty shipping envelopes are designed for high strength, with a thickness of 2.95mil per side, and are tear, stretch and puncture resistant. In addition, the inner lining of those mailers poly bags are made of dark material to protect the confidentiality of your shipment. 【Multipurpose Mailing Envelopes】Our colorful polymailers are a reliable shipping and packaging solution for your small business, eliminating the need for additional packaging and saving you time. Not only is it suitable for mailing, but it is also a packaging option for the retail industry. 【Make a Lasting Impression】JinRuiKJ Thank You packaging bags bring a lively atmosphere through bright colors that will make your business stand out from the rest, build brand loyalty and leave a lasting impression on customers. Specification: 50 Pcs 12 x 15.5 Black Leopard Poly Mailers with Handle, Shipping Bags with Self Seal Adhesive Strip. Usable size: 12 x 15.5 inch; External size: 12 x 15.5 inch + 1.6 inch + 64mm NOTE: There may be 1~2 pcs more or less for per pack! JinRuiKJ focuses on solving the packaging problems of your business, if you have any questions, please feel free to contact our customer service staff.