Size: The mailers are available in a 14×17 size, suitable for items such as multiple T-shirts or jeans, and other items as well. Material: They are made of a durable, tear- and water-resistant plastic with a matte finish. Features: The mailers have a self-seal closure with a strong adhesive for easy sealing. Usage: They are a popular and cost-effective option for small businesses and individuals to ship apparel and other non-fragile goods