Superior PVC Traffic Cones: GarveeTech 28inch safety cones are made of PVC material,which is flexible and durable. The traffic cones can not only endure moisture, oil, and extreme temperatures but are also stand up to heavy loads and harsh weather. Even at the condition of 55°C or -20°C, it’s not out of shape.High Intensity Reflective Film : Each traffic cone has two high intensive reflective collars( 4" & 6" ),which ensures 360 degree visibility during day and night, even in rain, snow, fog, hail or other bad weather.Large Square & Heavy Duty Base: 13"x13" large square rubber bottom increases its wind resistance, making the traffic cone firmly grip the road, won’t easily be turned over and blown down by wind.Easy to Carry and Storage: Each traffic road cone can be overlapped in a row, so it won't occupy your space a lot. In addition, this traffic cones take up very little space in your car or garage, making storage and transportation very easy.Widely Used: Our reflective collars of traffic cones are appropriate for traffic safety and control, emergency rescue, construction sites, school, and other applications. No matter how terrible the condition is, that safety cone will meet your needs to the maximum extent.