Conweb Hi-Visibility Safety Fence This Hi-Viz orange Safety Fence, made from high density polyethylene, is flexible and easy to use. Will not unravel when cut and does not need to be stretched. Material will not corrode or rot, even after extensive outdoor use. 4' x 100' roll. Durable, white 6', fiberglass T-Posts (sold separately) make fence installation quick and easy.