Waterproof Tarpaulin Bag / Dufflle Bag with TPU Coating
Can a waterproof bag also be used to store valuables? A waterproof bag is usually coated with PVC (polyvinyl chloride) or TPU (thermoplastic polyurethane). Both plastic compounds are extremely resistant to water. Your valuables are also protected from salt water, sand and other dirt. 100% waterproof does not necessarily mean that you can dive or swim with the bag. If high external pressure builds up, water can still get inside.