Check the listing for details. 100ct Poly Mailers Shipping Bags 12"x15.5" 2.5 Mil Amazon Labeled Plastic.... Condition: New. Listed at 17.99 USD. The product is a pack of 100 poly mailers shipping bags, each measuring 12'' x 15-1/2'' in exterior size and 2.5 mil in thickness. These bags are designed for efficient and secure shipping, featuring Amazon labeled plastic for easy identification and organization. Ideal for businesses and industrial use, these poly mailers offer a convenient solution for packaging and mailing items.The product is a pack of 100 poly mailers shipping bags, each measuring 12'' x 15-1/2'' in exterior size and 2.5 mil in thickness. These bags are designed for efficient and secure shipping, featuring Amazon labeled plastic for easy identification and organization. Ideal for businesses and industrial use, these poly mailers offer a convenient solution for packaging and mailing items.