1. Material: Made of high-strength rubber, they are wear-resistant, weather-resistant, waterproof and anti-slip, suitable for outdoor use.

2. Design: The surface is decorated with patterns or hollowed-out designs, which are both practical and aesthetically pleasing.

3. Function: They prevent dust and dirt from entering the house and also have an anti-slip effect, making them suitable for use at doorways, in courtyards, and in front of shops.

4. Easy to clean: They can be cleaned by simply rinsing with water or beating, and maintenance is simple.