Do you need a durable monitoring sign? Do you want to use a simple way to remind people that they must pay attention to their behavior? If your answer is yes, then you can see our product, which are made by hard and sturdy material and safe to use. Features -Color:Black -Material: Acrylic. -Size: About 20.00X9.90X0.20cm/7.86X3.89X0.08inch. - of acrylic material, not easy breaking, durable and practical for using. -Good for any public or other places such as store, restaurant, office lounge and so on. -A great monitoring sign let people consciously , make a better public place. -Lightweight, easy to carry and store. Smooth surface, easy to clean and maintain. -The combination of Chinese and English can remind everyone to pay attention to their in public and not to do anything wrong. Package list: 2 x warning signs