construction areas. The top of barrel can add warning light to make it more attractive. They are with high quality reflective tape. Easy to see even at night. The barrel is made of high quality PE, HDPE. The base is rubber and it is heavy. Durable and easy to install. Colors and be customized. Usually the barrel is orange, green, or red. The rubber base is black. The reflective tape usually is orange, white or yellow. The dimension is big, so it is heavy duty. Don't worry about the move in wind. Buy traffic barrel at best factory price in Chengdu RongXiang Technology Co.,Ltd specilizing in manufacturing traffic safety equipments.