Review on Waterproof Motorcycle GPS Bike Phone Mount with 360 Degree Viewing - Compatible with Garmin, Zumo, Magellan, Tomtom, Trail Tech, and GPS Units up to 6.75 Inch - USA Gear by Robert Ducki

First, the case fits the iPhone 7 Plus perfectly, although the home button doesn't work through the plastic screen. I use this primarily with a Garmin 42LM and although the case is larger than it should be it works well. I managed to break one of the zippers because it was a bit heavy, but it still works fine with just one zipper. The mount works, but leaves something to be desired in terms of volume, which makes it difficult to use it properly in tight spaces. The mount holds very well on my bike behind the windshield at high speed and doesn't vibrate. It appears to be more waterproof than waterproof. I used it in the rain while driving with no problems. I can't confirm if it will hold water if rain hits it while standing still.