BADIGAO Waterproof Phone Case, Touchscreen Compatible, for Swimming And Food Delivery, Premium Transparent Sealed Bag with Strap, Neck Strap Phone Pouch, Black

Before use, conduct a waterproof test by placing a dry tissue in the bag, sealing it, submerging it under water with a heavy object for 30 minutes, and checking for any water seepage.

To prevent the phone from sticking to the waterproof bag, blow air into the bag before inserting the phone to make it easier to remove after use.