Fun, functional Terrific Pockets are just the right size to hold a generous stack of cards, including Trend Pocket Flash Cards and Skill Drill Flash Cards (sold separately), library cards and index cards, making them ideal for word walls, file folder games, sorting and more. Durable, acid-free pockets feature friendly owls and high tabs to prevent catching or tearing. Use with Terrific Index Cards. Pocket coordinates with Owl-Stars! Collection.