Do Portable Map Cases Offer Enough Protection in Wet Weather?

Map Case Materials and Water Resistance

Most portable map cases are made of lightweight materials such as nylon or polyester, which offer little to no water resistance. Even cases with waterproof materials often have seams and stitching that can leak water. A 5mm waterproof rating is generally considered the minimum standard for a map case to be considered fully waterproof. However, many portable map cases do not meet this standard.

Case Design and Protection

The design of a map case can also affect its ability to protect against water. Cases with roll-top closures or zippers are more prone to water ingress than cases with snap closures or magnetic seals. In addition, cases with a clear plastic window can allow water to seep in from the sides. To improve water protection, users can add additional layers such as a waterproof sleeve or a clear plastic bag.

Alternative Options for Wet Weather

For users who need to navigate in wet weather, alternative options such as waterproof maps or digital maps on a smartphone or GPS device may be more practical. Waterproof maps are made specifically for use in wet conditions and are often printed on a special type of paper that is resistant to water. Digital maps can also be viewed in wet conditions and can often provide additional features such as GPS tracking and altitude information.