The Staples Thermal Laminating Pouches in Letter Size with a thickness of 3 mil come in a pack of 50. These high-quality pouches are designed for professional laminating needs, providing durability and a sleek finish. The brand, Staples, ensures reliability and performance, making these pouches a practical choice for various office and industrial applications. Ideal for use in laminating equipment, these thermal pouches offer an efficient and convenient way to protect and enhance documents and printed materials.