These large rectangular-shaped signs have a standard portage symbol and lines for writing in Distance:, To: and From: for a more descriptive guide to what's involved. Tough yellow UV plastic and black UV ink means this image will last outdoors. Each has 4 holes for mounting and measures about 20x29cm/8x11.5". Popular with parks and canoe route managers, this also makes a nice gift for the avid camper or paddler who can write in their own lake names and distance.