Scotch Thermal Laminating Pouches protect items from damage and are for use with thermal laminators. These 5 mil thicker pouches are great for a very sturdy and more durable finish. Protects and adds professionalism to business documents. Great for signs, flyers, schedules, certificates, to-do lists, and other frequently used documents. Ultra clear to let important information show through. Ideal for marker-proof, tear-proof and spill-proof paper items that you want to last in the home, office or classroom. Recommended to use with Scotch Thermal Laminators. Letter Size, for items up to 8.5 in. x 11.4 in. 15/pack. 5mil.