IN THE ZONE. Brave alpine extremes, rough terrain, and relentless rain from trailhead to summit with a lightweight zoned-fabric design that boosts comfort, mobility, and durability. 3L GORE-TEX® C-KNIT™ fabric is waterproof and windproof with a breathable knit backer, while CORDURA® scuff guards below the knees add extra toughness against sharp edges and crampon spikes. Full-length, dual-side PU zippers let you pull these pants on over boots and crampons, while zoned fabric construction combines ripstop and plain-weave patterns to optimize ruggedness and breathability where you need it most. 100% seam-taping and a C0 DWR (Durable Water Repellent) treatment keep moisture out, while an adjustable, integrated waist belt helps you dial in the right fit whether you’re layering up or down.