I have used this case for about five years. It sits on the deck of my sea kayak in all kinds of weather holding my Garmin GPSmap 76CSx. The Garmin is supposed to be waterproof, but West Marine suggested putting it in a dry case anyway. The case loads easily and seals tightly. It is easy to access all of the Garmin's controls through the clear cover. Rinsing with fresh water and an occasional cleaning with a little 303 Protectant is all the maintenance it needs. The case has kept my Garmin bone dry until my last trip when I discovered two pin holes in the clear plastic. I will be replacing this case with another just like it. Five years in hard service is about all I can expect of something like this.