Swingline® GBC® SelfSeal™ Pouches. These Peel and Seal Self-Sealing Clear Glossy Laminating Pouches are ideal for laminating a variety of items. Especially great with heat-sensitive materials, inks and photos. No heat or machine required, just peel and seal. For letter size documents. Glossy 9"x12". 3 mil. 10/pack.