No more soggy charts. No more maps flapping in the wind. The NRS HydroLock Map Case helps you navigate with ease. Just fold your map to the right section, seal it inside, secure it to your boat, and go! Four sizes to accommodate most maps, charts, or books, as well as essentials such as wallets, snacks, and a warm hat. The HydroLock zip seal provides a totally waterproof closure. A clear urethane window lets you see both sides of your map, chart, or guide. Attachment points in the corners make the NRS HydroLock Map Case easy to lash to your boat or a deck bag so it's always right there when you need it.

Interior window dimensions:

S: 12"L x 8"W

M:15"L x 12"W

L: 18"L x 15"W