I haven’t used this at the sea or the pool yet, but I did the waterproof test. I put a tissue paper inside the bag and submerged it under the water on my sink for 5 mins. As you can see in the picture, the tissue stayed dry.
However, it’s VERY HARD to push the home button (I am using iPhone 7). Of course touch ID doesn’t work but it’s already stated on the product description, so this is not a surprise.
Works well to protect your iPhone from water, and came with a nice strap. Per instruction, it’s very important to re-do the waterproof test everytime you want to use this bag. Looking forward to using this waterproof bag on my beach vacation.