Zip-off leg configuration gives you two distinct looks without taking up extra baggage space.

Mountain Hard Wear's Convertible Pack Pants are perfect travel companions under partly cloudy skies or in regions where nippy mornings serve up sunbaked afternoons. Unlike most convertible travel pant designs this one has reinforced seat and knees making it better suited for trekking in isolated areas where tailors rarely tread. The seamless conical waist is chamois-lined so it feels better than most traditionally cut backpacking pants especially if you're bearing a heavy pack. If you're headed to dusty and dirty places consider the Mountain Hard Wear Pack Pant--it doesn't convert like this one but it does offer many of the same features and fabric.