These white 6 x 9 inch poly mailers are made from durable polyethylene (PE) material, providing a lightweight yet reliable shipping solution for a wide range of products. Designed to be waterproof, these mailers help protect contents from moisture during transit while keeping shipping costs low thanks to their lightweight construction. Their strong, tear-resistant design makes them ideal for shipping light and less fragile items such as clothing, accessories, documents, and soft goods. These mailers do not include bubble padding, making them best suited for products that do not require additional cushioning or impact protection.