What Our Gearhead(R) Experts Are Saying: "I've used these on long alpine days where mobility and abrasion resistance really matter. The stretch is excellent for high steps and stemming, and the fabric blocks wind without feeling stuffy. The harness-friendly pockets and boot hooks make them especially dialed for technical terrain." We head into the mountains year-round, and the Taiss SO Pant keeps pace no matter the objective. From alpine climbs to icy mountaineering routes, these pants balance freedom of movement with the toughness needed for rock, snow, and mixed terrain. Mammut built them to feel natural while moving fast and deliberate when things get steep. The robust softshell double-weave fabric resists abrasion while remaining breathable and wind-repellent, finished with a PFC-free water-repellent treatment. Stretch throughout the fabric supports dynamic movement, while the externally adjustable waistband fine-tunes fit. Harness-compatible zip pockets keep essentials secure, and the adjustable, asymmetrical hems with boot hooks deliver a streamlined fit over mountaineering boots for precise foot placements.