Description The Rab Men's Firewall Guide Waterproof Pants are robust, fully waterproof shell pants designed for demanding mountaineering, climbing, and expedition use. Built for prolonged exposure to sleet, snow, and heavy rain, they combine durable 3-layer Pertex® Shield protection with an articulated construction designed for unrestricted movement on steep and rugged terrain. The 40D Pertex® Shield 3-layer fabric provides a 20,000mm hydrostatic head and 20,000g/m²/24hr breathability, while the fluorocarbon-free DWR finish helps shed surface moisture. Reinforced hems and dedicated crampon patches provide added durability when moving through technical terrain, while articulated knees allow a natural range of movement. Full-length two-way side zips with internal storm guards make the pants easy to pull on over boots and other layers, while also providing adjustable ventilation. A hook-and-loop waist adjustment allows the fit to be customised, with brace attachment points for additional support. A snap adjustment at the hem accommodates different boot types, making the Firewall Guide Pants a dependable choice for serious winter mountain use. Rab Men's Firewall Guide Waterproof Pants Features Fully waterproof shell pants for demanding mountain conditions 40D Pertex® Shield 3-layer waterproof fabric 20,000mm hydrostatic head provides high-level waterproof protection 20,000g/m²/24hr MVTR provides good breathability Fluorocarbon-free DWR finish sheds surface moisture Regular fit allows comfortable layering underneath Ascent-ready articulated knees provide unrestricted movement Full-length two-way side zips make them easy to pull on over boots and layers Internal storm guards protect the side zips from weather Hook-and-loop waist adjustment allows a personalised fit Brace attachment points provide compatibility with braces Reinforced hems improve durability around crampons and rough terrain Dedicated crampon patches provide additional protection against sharp crampons Snap-adjustable hems accommodate different boot types Deep tricot-lined waistband provides additional comfort YKK® AquaGuard® fly zip provides weather protection Designed for all-day wear in severe weather Ideal for mountaineering, climbing, winter hiking, and expedition use PFAS-free construction Specifications Fit Regular Weight 538 g (Size M) Waterproof Rating 20,000 mm Hydrostatic Head Breathability 20,000 g/m²/24 hrs MVTR Main Fabric 40D Pertex® Shield 3-Layer Fabric Weight 148 gsm DWR Fluorocarbon-Free Recycled Content 27% Total Product Weight PFAS PFAS Free Product Code QWI-83 Best Use Mountaineering, Climbing, Winter Hiking, Expedition Features 3-layer waterproof construction, articulated knees, full-length two-way side zips, internal storm guards, reinforced hems, crampon patches, adjustable waist, brace attachment points, adjustable hems, YKK® AquaGuard® fly zip