How to test the Dry/Weld Bags?  When you got the dry bag you can also make the testing by yourself

Step 1: Should check the bag at first. Then open the bag and put inside some stuffs(we just use tissue for example)

Step 2: Closed the roll top opening

Step 3: Put the bag inside water(the whole bag under the water)

Step 4: Open the bag and check the stuffs inside to see if it keep dry