Best price I've found for these cases, normally retail around £55-60+
BLACK OR WHITE LIFEPROOF CASE SHOCKPROOF COVER FOR IPHONE 6 OR 6S -:
Waterproof: Submersible to 6.6 feet / 2 meters for 1 hour
DirtProof: Sealed from dirt + dust
SnowProof: Closed to snow + ice
DropProof: Survives drops from 6.6 feet / 2 meters
#1 Selling waterproof case
The Best Waterproof Case according to thewirecutter
"In our tests, the Frē kept water out, which is clearly the most important quality for a waterproof case. It’s also the thinnest and lightest waterproof model we tested, so you can use it as your everyday protector if you need to. And unlike with some other cases, the iPhone’s buttons aren’t made more difficult to press through the Frē and the phone’s touchscreen sensitivity is only minimally affected. "
If you like to take your phone to your adventures is a must have.