Floating Waterproof Bag: The EVA foam behind the bag is filled and the air bubbles filled around make your phone float on the water to avoid sinking valuables into the water. Buoyancy material support device up to 9.5 oz (270g), like iPhone X/8/8 Plus.NOTE: It is recommendt put your phone into the waterproof case and conduct a test to check whether it is floatable or not. If not, then you need to remove the phone case and retest. IPX8 Certified Waterproof: Completely sealed design, protect your cellphone, credit cards, and documents from water, snow and dust. Suitable for swimming, fishing, boating, skiing or other activities. NOTE: Make sure this waterproof bag is sealed and the recommended depth of use is below 49 feet Touch-Sensitive and Transparent Window: Premium TPU material will work well with all the HOME buttons, including iPhone X/8/ 8 plus, But not for ID fingerprint. With transparent window, you can take clear pictures or videos underwater. Tip: please use the VOLUME BUTTONS to take photos. Because the water pressure causes the touch screen function to be affected.