The Sealed Case 100 Packs of Ultra PRO 2.5" x 3.5" Soft Trading Card Penny Sleeves is a high-quality storage solution for sports trading cards. These clear soft sleeves are compatible with standard-sized cards and are acid-free to prevent damage. With a total capacity of 10000 cards and extra clear features, this product ensures that your cards are well-protected and easily accessible for display or trading. Ideal for collectors and enthusiasts looking for a reliable and durable storage solution for their card collection.