5PCS Frosted Frame and Transparent Type Storage Anti-UV Card Brick for Collector-Grade Protection for Card Slabs Premium materials:They are made of high quality acrylic material that is colorfast, resistant to damage and deformation, keeps the cards clean, waterproof, scratch resistant, prevents discoloration of the cards, etc. Unique design: top loaders for cards is made of high-definition transparent hard plastic, the surface is smooth and comfortable to the touch, the simple design allows you to display your cards in an atmospheric way,紫外線によるカードの損傷を防ぎ、カードが曲がるのを防ぎます。