Material: Resin Applicable scenarios: living room, bedroom, bathroom. Size: As shown in the picture. 4 sizes are available, from 1 bird to 4 birds Bird Colour: White / light Blue / Dark blue (Optional) Note: Due to manual measurement, the size figures may have a little error. Due to the photo light and monitor color settings, the color may be slightly different. Thank you for your understanding. 3 Installation Methods: Method 1: Expansion screw installation, suitable for any perforated wall. Expansion screws are included. Method 2: Nail installation, suitable for lime wall or wooden wall. The nails are included. Method 3: Nail-free installation, suitable for ceramic tile, glass, wood wall. Due to package transportation control reasons, nail-free glue is not included, please buy at your local store.