I like this clear one better than the ones you can't see through. You also don't need a coin or screwdriver to get into it.
THERM-A-REST Fast and Light Snap Kit
28 Jul, 2016
Works well
The most difficult part was tearing off the sticky cover to attach to the pad. The backing doesn't come off easy and sticks around the button holes. I had to attach them with little pieces of the plastic covering still stuck on.
MAUI JIM Zip Closure Clamshell Sunglasses Eyeglasses Case • Small • Brown