The 5.11 Tactical Tac Lite Pro pants hold up well and have some cargo pockets. If you want less expensive there is always the BDU clones, I get mine from LA Police Gear for under $20. They have good pricing on the 5.11 pants as well.

I prefer the under $20 BDU pants because the pockets are larger and they are expendable at that price. Quick drying Poly/cotton ripstop fabric too.
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No, I am not Bear Grylls, but I stayed at a Holiday Inn Express last night and Bear was there too!