Review on Lewis N Clark Waterproof Medium by Jason Wright

Nice little case but worried about how easily the hinges rust when exposed to water. Every time I go kayaking, I carry a large and a small waterproof hard case with me. The little yellow works as expected, but the big blue's metal hinges are rusty after just a few months of use. The large one holds my phone and to be honest I keep it next to my seat in the kayak and open it more often than the small one. It is splashed but has never been fully submerged in water. I use a small yellow key box and keep it safe in a dry bag in the kayak so it doesn't get wet. So far water hasn't damaged my phone but I'm concerned about rusting which means water can seep inside.