"What Our Gearhead® Experts Are Saying:""I use the Aconcagua ML Long Tights as both a cold-weather base layer and a standalone tight for hiking. The Power Stretch Pro fabric is super durable and moves with me, while the lighter lower-leg fabric keeps things from overheating. They fit close without feeling restrictive, and I’ve had zero issues with wear after heavy use.""We count on the Aconcagua ML Long Tights from Mammut for everything from early-morning ski tours to long mountaineering days and shoulder-season hikes. They’re the kind of tights we reach for when conditions fluctuate and we need dependable warmth, stretch, and durability without constantly changing layers. The main fabric uses Polartec Power Stretch Pro for a warm, abrasion-resistant, and highly elastic feel that stands up to demanding terrain. Polartec Power Grid fleece on the lower legs reduces bulk and improves moisture management, making these tights comfortable under hardshell pants or on their own. An elastic waistband ensures a secure fit, while a low-profile zippered leg pocket adds practical storage for small essentials."