Whereas MK's Original Mountain Pants are rough, tough, ready for the trails and crags, the Teton Twill khakis are more for the office, the pub and date night. Make no mistake, though -- these are the toughest twill pants you'll ever own. Much more rugged and sturdy than, say, Bill's Khakis or Docker's K1. The twill here is incredibly durable. Plus, you get all the great features of MK pants -- the diamond gusset, the reinforced cuffs, the metal button and the side pocket. These dress up much nicer than the OMP's, but can still take a beating. Match these up with a nice button-up or a polo shirt. I love these and reach for them morning after morning.