$149.95
With fluffy PrimaLoft insulation and softshell reinforcements in the seat, knees, and ankles, the Marmot Mens Flurry Insulated Pant is built for the coldest days on the mountain.
$139.95
For high-altitude climbs or frigid nights in camp, the MontBell Mens Ultralight Thermawrap Pant insulates your lower half from the biting chill.
$175
An open bivy on an exposed ledge just got a little more bearable thanks to the light, compressible, weather shedding Patagonia Mens Micro Puff Pant.
$498.95
For conditions colder than you can even imagine, The North Face Mens Himalayan Down Pant separates your warm body from the frozen world with a barrier of fluffy, 800-fill goose down and Gore Windstopper fabric.