The revolutionary new way to prevent laminator jams. Just simply insert your laminating pouch into the Pouch Jacket and start laminating. Highly recommended to prevent jams, especially when laminating small or irregular shaped items or when the pouch is not completely filled with your document. Also recommended when using thin, lightweight laminating pouches. Made from a special lightweight, heatproof material, similar to saucepan coating. Much more effective than traditional card carriers, which need excessive heat to work effectively. A3 size - for use with all A3 pouch laminators.