Eric Johnsonwrote a review of Patagonia R1 Pant - Men's on April 6, 2010
You may care to look up TRU-SPEC Gen III Level 2 ECWCS Drawers instead (I did). These can be found almost anywhere for much-less-than-half-the-price-of-these. The only differences I can see are that the TRU-SPECs have:
1 - a much lower and more roomy crotch area (which some may say is not such a bad thing); and
2 - a very simple elastic waistband i.e. not covered with R1-like material.
...and of course they don't say "Patagonia."