1. Material: The fish tank background is made of PVC material, which has high transparency, non-toxic, no odor, no water stains, and long service life. 2. Self-adhesive: The poster has its own glue on one side and self-adhesive on the other side, which is easy to paste and can quickly paste the background sticker on the aquarium or fish tank. 3.: No complicated steps are required, this background poster with attractive themes and real and clear patterns can provide a simple and effective decorative design for your fish tank. 4. Widely applicable: Unique fish tank decoration, fine workmanship, can display 3D effects underwater, and is not easy to fade. It is suitable for all kinds of fish tanks and aquariums. 5. Save time and effort: The background sticker adopts a thickened design and is easy to maintain. Just wipe it clean with a rag. It is an excellent decoration for fish tanks and aquariums.