Minimalist Map Case LargeMinimalistic Map Case Large is a waterproof map case with internal dimensions 262x480 mm that fits Olympic maps. It is made of a lightweight TPU material that is also touchscreen compatible and has a ziplock closure. The map case is transparent on both sides and can be attached to your kayak or backpack. Waterproof map case for OS maps in light material with ziplock closure Minimalistic Map Case Large is made of a light 0. 2 mm TPU PU material with