These tough poly mailers are perfect for all your shipping needs. The self-sealing envelopes are designed to keep your items safe and secure during transit. Measuring at 14″ x 18″, these mailers are the perfect size for a variety of items. The light grey color gives a professional look to your packages. Made in China, these mailers are durable with a thickness of 2.5 mil. This bundle includes 50 mailers, making it a cost-effective solution for your shipping needs.