Are dry bags fully waterproof?

We cannot say for certain that all dry bags are 100% waterproof, but most dry bags are designed to be highly water-resistant if not fully waterproof. The level of water resistance depends on the materials and construction of the dry bag. High-quality dry bags are typically made with durable materials such as PVC, nylon, or polyurethane-coated fabrics, and are often fitted with airtight seals and reinforced with welded seams to prevent any water from entering the bag. However, certain factors like extreme water pressure or prolonged immersion can compromise the bag's waterproofness. So, while most dry bags are highly effective at keeping water out, it is always best to read and follow the manufacturer's instructions on how to use and care for the bag to ensure maximum protection.