You can't pack multiple pairs of pants for fast-and-light alpine missions. In fact, you don't pack any extra pants on these sorts of trips—you just wear the La Sportiva Men's TX Pants from the trailhead to the alpine. These ultralight pants feature a surprisingly durable fabrication with four-way stretch fabric for some added range of motion on the mountain. La Sportiva designed the TX Pants with an adjustable waist that pairs well with climbing harnesses, and the gusseted, articulated construction ensures freedom of movement.
Ultralight, durable, and stretchy pants for alpine climbing
Four-way stretch fabric for full mobility on trails and climbs
Adjustable waist pairs well with climbing harnesses