The Ultramap covers a large area yet is small enough to slip in a pocket.It is a fully detailed genuine original HARVEY map. The Ultramap is tough, light and 100% waterproof. To provide the biggest area on the smallest lightest sheet, the Ultramap is printed double sided. The ingenious folding pattern allows you to open the Ultramap directly to any part, and either side, of the sheet. The two sides are aligned, so when you reach the edge of the Ultramap sheet you simply flip it over without re-folding. There's an overlap as well, so you can map read continuously. The magic scale of 1:40,000 enables the Ultramap to provide all the detail you would expect to find on a large scale walking map, including rights of way and boundaries