From typical trail days to performing in the pow, the Obermeyer Men's Keystone Pants- Long are built to conquer the cold with breathable HydroBlock® Sport that delivers 10k/10k waterproofing, plus critically sealed seams for extra blockage in the backcountry. Designed with Full-Motion™ Articulation and reinforced at the hems and inseams, there's no stopping you're adventurous ambitions.