Ultralight active insulation legging built with a high-stretch composite filament pile knit. The fabric integrates recycled polyester loft directly into the yarn for stable insulation, zero fiber shedding, and a high warmth-to-weight ratio, while a nylon core provides long-term durability and recovery.

Designed for unrestricted movement, the open knit structure delivers exceptional breathability and fast drying performance. Ideal as a single-layer insulated legging within a modular layering system for cold conditions.