Double Security Storage: Card binder' inner page of the has a compartment design, and the outer shell is designed with a freely adjustable elastic band. The inner page can better fix the position of the card, and the outer elastic band prevents the card from falling and moving. Advanced Materials: Game collection book is made of high-quality PP material, which is non-toxic and harmless to the human body. The built-in and shell are waterproof materials, the hard shell can better protect your work cards and game cards, protect your card from scratches. The Advantage of Large Capacity: Ccard sleeves can better meet your card needs, with 360 independent pockets, 20 pages, double-layer design, and a total of 18 cards can be stored in front and back. It is your intimate assistant for organizing items. Excellent Performance: Card folder can be opened left and right. The transparent design allows you to find the card that attracts you most at a glance. The black is elegant and shows the grade and style. Collecting and sorting out the cards scattered in the room is no longer a hassle. Perfect Fit: Card pockets is perfect for most cards on the market, a single grid is 9.7*6.8mm, such as: game cards, Dragon Field cards, ID cards, trading cards, information cards, shopping card etc.