What Our Gearhead(R) Experts Are Saying:"I've worn these for long crag days and shoulder-season hikes, and the stretch really helps on high steps and technical moves. They're light enough for warm approaches but durable enough to brush against rock all day."When the route demands precision footwork and the approach tacks on extra miles, we need pants that move as freely as we do. The Black Diamond Alpine Pants are built for climbing days that start at sunrise and end long after the last pitch, blending durability with breathable comfort for sustained effort. Four-way stretch fabric supports dynamic movement on steep terrain while maintaining structure against rough rock. The lightweight construction helps regulate heat during high-output missions, and a PFAS-free DWR finish adds protection when weather windows look uncertain. An integrated webbing belt allows quick fit adjustments at the harness, and cordlock-adjustable hems let us dial in ankle clearance over climbing shoes.