Card sleeves are protective covers made from plastic that are designed to fit over trading cards, game cards, or collectible cards. They help prevent wear and tear, keeping the cards in good condition by shielding them from dirt, moisture, and physical damage. Card sleeves come in various sizes to accommodate different types of cards, such as those used in games like Magic: The Gathering or Pokémon. These sleeves often feature a clear front for visibility and a colored or opaque back for added style. Many players and collectors use card sleeves to maintain the value of their cards, as well as to enhance their gaming experience by making shuffling easier.