Field Test: Made from a light, stretch-woven blend, with two jean pockets and a zip thigh compartment, these have been my summer mountaineering pants for seven years. They breathe during slogs, fit under a harness, and dry quickly after a squall. The 2015 update provides a slimmer cut, enhanced stretch, and better durability for technical pursuits.
Why It’s timeless: They look like presentable khakis for an afternoon in mixed company.
Endurance Factor: I had to stitch up one small seam blowout. No other holes to speak of. $139; patagonia.com —Jeff Burke