• 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. Periodically clean the sealing surfaces and lubricate with 303 Protectant, Item # 38751.01, for ease of 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.

Sizing