Silva\'s Carry Dry Map Case is fully waterproof and fully transparent, so you can view your map from both sides in any weather conditions. Suitable for every outdoor activity, it\'s easy to open and close, and will keep your map dry in any weather. The neck strap lets you keep your hands free, and small holes in the corners make it possible to attach the map cases to your gear, such as your backpack or onto a kayak, depending on your needs.Waterproof -  keeps maps and equipment safe in any condition Will fit all common map formats including OS maps Remains flexible in temperatures down to -20°C Quick and easy closure system Compartment size: 300mm x 300mm Temperature operating range: -20°C to +60°C Material: TPU/PA Weight: 78g