The cunning Arctic Fox (scientific name, Alopex Lagopus) grows a cozy fur coat to fend off cold. You don't have that luxury, but you can take shelter in something even better: Alopex Base Layer Pants. They're as agile and resilient as their namesake, in body-hugging 77% polyester/23% spandex knit that traps body heat, wicks moisture and fights stink. It's smooth, stretchy and quite supportive – never bunches or binds under layers. And we've loaded 'em with functional features you won't find anywhere else, like an extra-wide no-pinch waistband, contoured seams for chafe-free comfort and even Cordura® nylon-reinforced knees with built-in knee pads that are breathable and washable. Slip 'em on, and out-fox winter's worst.