Our custom color photocard sleeves are made of polypropylene material, which is thick, durable, and water resistant. The custom colors makes your collection pop, but most importantly they are PVC Free and Acid Free. They are designed to protect your photocards from scratches, dust, and other damage, while also allowing you to display them. The sleeves are 100 microns thick, which provides excellent protection for your cards. They are perfect for collectors, fans, and anyone who wants to keep their photocards safe and organized. We recommend using size 57x88mm as an inner sleeve if you prefer a tighter fit.