This is a top-notch map, similar in detail to an OS map, but infinitely more user-friendly and durable. When opened out with just one fold (eg showing the full map on front & reverse) it is slightly larger than a broadsheet newspaper - so a good manageable size. It is laid out in sections to traverse the 100 miles of the South Downs way. It is made from polyethylene, and feels like plasticised paper with a silky finish. It is extremely strong, hard to tear even deliberately (!), and shows no signs of wear where it is repeatedly folded. It shrugs off water and looks like it would withstand very heavy use even in bad weather. A lot of thought and nice touches have gone into the layout and design to make it a really practical and helpful map for the user. Important information is highlighted clearly, and when you switch from one panel to the next there are clear markers to take you from the equivalent points on one section to the next. There is also plenty of overlapping detail at the start and finish of each panel so you don't need to jump back and forwards between sections.
Overall, this is hard to fault. It would be helpful if the distance markers used on the large-scale summary map were repeated on the detailed sections, but this is a small point. Overall it packs a lot of information into a practical, durable, easy-to use map that isn't going to let you down in tough conditions. I'm very impressed and will actively seek out maps from Harvey in preference to any other map, and certainly the very poor OS maps that tear at the folds and disintegrate in rain.