This Dielectric Umbrella is rated to 40kV per ASTM D-149 to help reduce the potential of electrical shock when working near power conductors. A tough plastic 68 in. (173cm) diameter umbrella cover is colored safety yellow on top (custom company logos available upon request) A reflective white underside cuts down on the interior heat absorption and is vinyl-coated; nylon rib-end pockets keep the frame from tearing the cover Self-sealing waterproofed, waxed stitching, and improved construction using a nylon sleeve and rib retainers for attaching the frame’s six (6) collapsible fiberglass ribs The ribs connect at a ring-type lock that slides along the pole to open and close the umbrella. To lock the ring when open, just slide it over the set pin in the pole and rotate it. The 72 in. Fiberglass Pole is Rated to 40 kV per ASTM D-149 Use the Dielectric Umbrella when working near power conductors to help reduce potential sources of electrical shock GMP Dielectric Utility Worker's Umbrella GMP70352