These poly mailers are perfect for all your shipping needs. Measuring at 12×16 inches, they are spacious enough to fit a variety of items. The lip size of 1.5 inches gives you extra security when sealing, ensuring that your items stay safe and secure during transit. The thickness of 2.5 mil +/- 5% makes them durable and resistant to tears and punctures. Designed for business and industrial use, these mailers are a reliable choice for your packaging needs. They are ideal for a variety of applications, from sending documents to shipping products. These mailers are a great choice for those looking for an affordable and efficient way to ship their items.