The Aconcagua ML Tights Long are your go-to layering piece for skiing, mountaineering, or cool-weather hikes — built for versatility, warmth, and lasting comfort. Whether worn under hardshell pants or on their own, these fleece tights deliver exceptional thermal regulation and freedom of movement through a sophisticated combination of two premium Polartec® fabrics.

Performance Through Intelligent Fabric Design

The main body is made from Polartec® Power Stretch® Pro™, a robust, four-way stretch fleece renowned for its durability, abrasion resistance, and comfort against the skin. Reinforced with a nylon outer surface, it’s built to handle years of wear under technical layers or harnesses.

On the lower legs, Polartec® Power Grid™ fleece adds lightweight insulation and superior moisture management with a low-profile structure that layers effortlessly under boots and gaiters. Together, these materials maintain the perfect balance of warmth, breathability, and mobility — mile after mile, climb after climb.

Refined Fit & Functional Details

A wide, elastic waistband ensures a secure, flattering fit with zero pressure points, while the zippered leg pocket offers convenient storage for small essentials. Bonded pocket bags create a low-friction interior and a clean, streamlined aesthetic.

Specifications

• Fit: Tight Fit

• Weight: 204 g

• Main Material: 52% Polyester, 39% Polyamide, 9% Spandex

• Insert 1: 89% Recycled Polyester, 11% Spandex

• Insert 2: 85% Polyamide, 15% Spandex

• Fabrics:

  • Polartec® Power Stretch® Pro™ – robust, warm, and ultra-elastic

  • Polartec® Power Grid™ – lightweight, breathable, and moisture-wicking

• Pocket: Zippered thigh pocket

• Certifications: bluesign® PRODUCT | Fair Wear