Premium Material: Index card holder is made of liquid silicone fiberglass which can withstand temperatures up to 2000°F. It has been passed by UL94 VTM-0 Certified. And it is not only fireproof but also high water resistant, moistureproof is not a problem. The inside of the index card box is supported by PP material, which is not easy to deform and is more sturdy, durable and safe. It's going to be a whole new experience Large Capacity:Enjoy ample storage with this index card organizer that holds up to 1,200 5x8 inch index cards. It's the perfect organizer box to keep track of notes, receipts, pictures and more Combination Lock: The double zipper code lock improves the security of the note card holder. In addition, the three-digit code lock device provides the maximum safety for your valuables and personal privacy Collapsible:5x8 index card box adopts a one-piece design, which is very easy to install, just unroll it and put the support plate on the bottom, then the assembly is complete,Beliver you can do it with your eyes closed! Also it can be cleaned directly with a damp cloth Customer Service: JUNDUN keep researching and developing on fireproof materials,safety technology.We only wish to present the best to customers, protect your valuables.If there any quality problem, please feel free to contact us via amazon.We promise to arrange a replacement or 100% refund immediately. Ready to respond within a 24 hour time,your suggestion has a great impact on the upgrade of our products JUNDUN Index Card Holder with Lock,Collapsible Fireproof Index Card Box 5x8 Inch