Designed for the ambitious backpacker, avid day hiker, and weekend paddler, the SealLine Map Case provides transparent protection from light rain showers, accidental drops into wet environments, and splashes on the water. It's constructed with a zip-lock closure and welded seams to keep unwanted moisture out. The Map Case comes in three different sizes, so you can use it on a shorter day hike or bring it along for extensive outings. It's not intended for full submersion, but it's great for extensive use outdoors, so long as you don't drop it directly into the water. D-rings at each corner allow you to tether it to your kayak, canoe, backpack, or bike without it falling off.