100% LIFETIME SERVICE FROM US: Your satisfaction is our goal. If you are not satisfied with the product or have any problems in use, please freely contact us at any time, we will pay your money back or do changes without any hesitation, thank you. MULTIPLE USES: This backer board can be used as a photo backing, picture frame, drafting or display board, which is great for crafts that require strong back support. White cardboard on both sides with can be made for signatures, unique patterns, and other DIY projects for decoration. ACID-FREE QUALITY: Acid-free matte boards can well save your precious memories with photos, perfect for framing photographs and artworks with double-sided tape. Flat and smooth surface is also suitable for small object classification and keeping them in a bag for storage. OPTIONAL SIZE: Our photo mat boards measure 11x14, suitable for 11x14 frames. These backing boards can be cut into your desired size and shape to decorate for birthday parties, family gatherings, and weddings. What's more, various sizes are available: 5"x7", 8"x10", 11"x14" and 16"x20". DURABLE SUPPORT BOARDS: Somime backing boards are made of thick and durable cardboard material that won't bend or break easily. Internal 4 ply thickness(about 1/16 inch) sheets ensure stability. You can combine together with photo mats and clear bags for a better display of your artwork and prints. PACKAGE INCLUDES: This item comes with 25pcs uncut mat boards and a sufficient quantity can meet your daily use and replacement demands. They can be used as a part of a frame and mat for extra protection from deterioration. And the whole set is well packaged in a box to prevent shipping damage.