Constructed of high density, extra durable polyethylene to retain its shape after highspeed impacts. Single flat side prevents rolling with a waffle pattern on base to eliminate “creeping.” Tapered design enables stacking for transport. Measures 38-5/8" high. Top diameter is 18-1/8", bottom is 22-3/16". Meets MUTCD standards. Sundowner Light The Sundowner flashing light (not shown) has a yellow case and amber lens. Can be bolted down to barricades and barrels. Takes two 6-volt batteries (sold separately). Available with a solar switch that starts light at sundown and shuts off at dawn.