LifeProof iPhone 7 Plus Cases
The iPhone 7 Plus is now water-resistant. That's great and it will save some iPhones, but you shouldn't go swimming with it since it is only rated for 1 meter of water for 30 minutes.
If you plan to swim or think your iPhone will end up deeper or underwater longer than that rating -- check out LifeProof iPhone 7 Plus cases.
The Fre iPhone 7 Plus waterproof case includes a built-in screen protector and will allow you to take the iPhone 7 Plus deeper and use it longer.
The Nuud iPhone 7 Plus waterproof case seals to the front of the iPhone 7 plus so there is nothing in between your finger and the screen.
With either of these options you can take the iPhone 7 Plus to 6.6 feet for an hour. it also protects from drops up to 6.6 feet.
$89.99 and $99.99 at LifeProof