Built with PrimaLoft Active Evolve fabric (95g/m²), this hooded long shirt delivers a CLO value of 0.702 and 50.7% heat retention — significantly outperforming standard fleece and knit insulators. Its ultra-fine fiber structure creates air pockets that trap heat during rest while actively venting moisture and warmth during movement, keeping body temperature regulated across a wide range of conditions. The design packs down to approximately 175g in size M and stows in its own exterior pocket, making it a practical layering piece from early spring through winter. Reinforced stretch fabric at the cuffs adds durability in high-wear zones, while the fitted hood and high-stretch construction allow unrestricted movement.
PrimaLoft Active Evolve insulation at 95g/m²
CLO value: 0.702 — outperforms standard fleece (0.2–0.3 CLO)
Heat retention rate: 50.7%
Packs to approx. 175g in size M (stores in exterior chest pocket)
Active ventilation: breathable and moisture-wicking during movement
Static insulation: retains body heat effectively at rest
Stretch cuffs with durable reinforced fabric for high-wear durability
Fitted hood included; suitable for layering or standalone use
