I have an Otterbox 3000 and 2000. I use the 3000 for my survival kit, but it is intended to be in a pack. I use the 2000 for my FAK.

I would maybe carry the 2000 in a cargo pant pocket, but it is a little bulky. I personally like the yellow coloring for visibility.

Here is a link to pictures and my post in this forum.
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"I reject your reality and substitute my own..." - Adam Savage / Mythbusters