The Seattle Sports Waterproof DryDoc Large MagniMap Case is ideal for protecting all of your maps, and have lash points at all four corners.. It includes a large flexible magnifying lens (7' x 4-5/8") to assist with reading small features on a map and has its own protective pouch to house it on the back side of the case. The map case is built with an eco-friendly PVC-Free film that's super puncture proof, and these cases are as tough as they are useful. A positive-snap Ziploc®-type closure makes them extremely easy to use. With their simplicity, they are also an inexpensive solution offering great protection to your maps or valuable documents. The Large MagniMap Case measures 12.5" wide x 15" high (to the zipper).