Product Description: Purple Cows Kool Pockets are sealed using cold lamination; the seal is made by pressure, not heat. DO NOT use Kool Pockets in a hot laminator as damage may result! Use Kool Pockets with Purple Cows cold laminators, the cold laminator settings are designed to work with the Kool Pockets. Edges around thick items can be sealed and air bubbles may be removed by burnishing (rubbing with a non-abrasive tool). 4” x 6” Contains 20 pockets 10 mil. thickness |