I would highly recomend this map case. I have been using it on my Duke of Edinburgh Expiditions and even in heavy rain it stays waterproof. I found it very useful compaired to others I have had in the past due to the back and front being transparent and very clear to see through even when sunny. It is also very slim and compact which I found useful for on DofE. However I'm not too keen on the strap, in my opinion it is a bit rough on bare skin and also I was a bit disappionted that there was no pocket for a compass, whistle etc.