The characteristics of game card sleeves mainly include size, material, design, durability and price. Here are some common characteristics:
 

‌1. Size‌: The size of the game card sleeve is usually designed according to the size of the game card to ensure that the sleeve can perfectly wrap the card and prevent the card from sliding or being damaged during the game. For example, the size of the Yu-Gi-Oh card is 59mm x 86mm, while the size of the official card sleeve may be slightly larger to accommodate different game needs.
‌2. Material‌: Game card sleeves are made of a variety of materials, including plastic, paper, etc. Different materials will affect the durability, transparency and feel of the sleeve. For example, frosted card sleeves are usually made of plastic, providing a better feel and protection, while official card sleeves may use higher-grade materials to ensure quality and durability.