When you need dependable core-to-knee warmth without bulk in your boots, the Guide Aerogel Hybrid Pants deliver. Using ultralight Aerogel panels and a breathable merino-blend fleece, these technical knickers provide exceptional insulation, mobility, and moisture control for high-output alpine missions.
How it fits into your System
Next-generation insulation technology
The Guide Aerogel Hybrid Pants use Aerogel — an ultralight material with the highest insulation-to-weight ratio of any solid — to deliver serious warmth while staying breathable during high-output effort. Strategic Aerogel panels insulate the thighs and hips and uniquely retain warmth even when compressed under a backpack, harness, or shell pant. Merino-blend fleece panels add stretch, comfort, and efficient moisture transport, keeping you dry on long climbs and transitions. The ¾-length knicker design prevents bulk inside ski boots and touring cuffs, while the ergonomic patterning supports natural movement on steep ascents and technical scrambles. Lightweight, packable, and built for demanding alpine travel, they offer a rare combination of warmth, breathability, and dynamic mobility across shifting conditions.
How to use it
The most technical lower-body midlayer in the range, built for active mountain use where warmth, breathability, and low bulk must work together. More protective and purpose-built than classic fleece bottoms, they layer cleanly under shells for efficient movement. Choose them for demanding touring and alpine missions.
