Makalu HeatFlux -30°C Insulated Jacket

Makalu HeatFlux Jacket is built for extreme cold, high-altitude travel & serious winter exposure. Part of Gokyo’s Sherpa Series, it uses HeatFlux lining insulation to deliver CLO Rating 4 warmth in temperatures down to -30°C. The locking detachable hood, Velcro-over-zipper seal, adjustable cuffs & compression sack improve heat retention, weather protection, packability & travel convenience. Ideal for trekking, mountaineering, winter travel & high-altitude camps where dependable insulation, wind protection & compact packing are essential. Key Features HeatFlux lining insulation with CLO Rating 4 warmth Built for temperatures down to -30°C Locking detachable hood for flexible coverage Velcro zipper seal, adjustable cuffs & compression sack If wearing M size T-shirt (Chest 20 one way) buy M size Jacket (Chest 22) If wearing L size T-shirt (Chest 21 - one way) buy L size Jacket (Chest 23)