Vinyl LP Polythene sleeves

I have used these bags as map cases since I was a nipper for mountaineering, walking, orienteering and generaly everything that requieres me to use a map case. They are increadibly cheap, durable, light, flexible, compactable and versatile, outdoing pretty much all built for purpose map cases at their own game. Best of all it doesn't matter if you lose or trash them because you can buy them in bulk and the cost next to nothing. Take my advice and get some.