Features: Easy to clean: : When cleaning, you can wipe off the dust or dirt on the surface with a damp cloth. Convenient and fast cleaning, saving time Strong suction cup design: The sign holder uses the suction cup design, no longer need to drill holes and screws, no tape or adhesive required either, and can be easily installed on glass or other non-porous surfaces to safeguard your walls. Specifications: Material: acrylic Size: approx. 8.5 x 11 inches Color: clear Package includes: 12 x Acrylic window sign holder Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.