[HIGH-QUALITY MATERIAL] Our aquarium poster sticker is made of premium PVC material, ensuring it is waterproof, safe, non-toxic, and has no impact on the water. [EASY INSTALLATION] With the adhesive side, this vibrant aquarium sticker is easy to apply with no need for tapes, glue, or gel. [LIFELIKE DESIGN] The colorful and lifelike stonewalling pattern creates a beautiful display, enhancing the appearance of your aquarium without fading over time. [WIDE APPLICATION] Available in 4 different sizes, this background sticker is a fantastic decorative painting that will make your fish tank stylish and beautiful. [EXCELLENT CUSTOMER SERVICE] We are committed to providing top-notch service, so feel free to reach out to us with any questions or issues, and we'll gladly assist you in resolving them.