It has favorable flexbility and can stand press of car,also it will not be broken if it is struck by hard things. It is sunproof,waterproof,heat-resistant,cold-resistant,non-rimous,color fast and soon. The orange and white color reflect dazzing light and make the drivers see clearly. It is sunproof, anti-uv, waterproof, heat-resistant, cold-resistant, non-rimous, colorfast and soon. Reasonable design, the cone could be stacked one by one.