This dry sack is made of food grade TPU material, which is able to be filled with water, even the food. The high strength, PVC-free TPU material is strong, durable, flexible and resistant to UV. Translucent mist dry sack offers visual convenience for easier storage. Innovated High frequency seamless welding technology, together with rolling sealing design, double protection, completely waterproof. Head-lamp could be fixed to the bottom of the bag. It could be treat as a lampshade to be a camping lights by the diffused of its fog translucent material.