Pebbles Our 3d-wallpanels design Pebbles looks a lot like river stones. Some say the Pebbles design looks like Swiss cheese. The embossed wall decor Pebbles design is an inspiring and imaginative design that looks great anywhere! A single WallArt commercial packaging contains 12 pieces of 3dwall-panels which covers a total of 3 square meters of wall. Our 3dwall panels have a size of 50X50 centimeter and they are easily installed.