Waterproof Vs. Water-resistant Bags: What Do You Need To Know? Water-resistant and waterproof are the two terms that are very important for campers and hikers. They always need either of the two types of bags. Waterproof Bags are the most preferred ones because of the multiple usages and the safety they provide to all the belongings within the bag. Wherein water-resistant bags can prevent the belongings in the bag from dripping wet with just some rainwater drop. Still, eventually, the water will pass through the material and reach the belongings.