The North Face's Summit Series prepares us for anything in the alpine, and the Summit Breithorn Pant is no exception. Fit & Design: Regular fit pants Full-length side zippers and snap-closure elastic cuffs for easy layering and on-off Elastic waist with drawcord and two-way zippered fly provide access and a comfortable fit Seat, knee, and cuff overlays for added protection from weather and abrasion Sized for wear over a baselayer; consider sizing up to layer over a shell Articulated knees improve range of motion while bundled up 1 Zippered thigh pocket(stowable) Technology: Insulation 800-fill ProDown (RDS-certified) Insulated alpine pants for added warmth on high-elevation adventures Pertex Y Fuse ripstop is durable, down-proof, and treated with non-PFC DWR Water-resistant ProDown insulation retains warmth and packability in alpine conditions