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Core Product Features Ultimate Thermal Performance 1000 Fill Power High-Loft Down High-down-content construction effectively traps body heat while minimizing heat loss Ideal for frigid temperatures, high winds, and extended periods of static or low-activity environments Compliant, Testable Down Standards Filling: National Standard Water-Repellent 90% White Duck Down Supports authoritative testing, meets national standards for down apparel Water-repellent treatment enhances warmth stability in damp conditions Lightweight Design Approximate total weight: 450g (reference value) Significantly reduces load while maintaining high warmth rating Easy to pack and carry, ideal for extended outdoor journeys Water-Resistant & Windproof Shell Fabric features water-repellent properties Withstands light rain, snowflakes, and humid conditions Robust windproof construction effectively blocks cold air penetration High-Craft Custom Details All hardware and accessories custom-dyed Three distinct zipper pull sizes throughout Inner pockets feature specially color-matched zippers Custom components for hood and hem drawstrings, hood ventilation eyelets Usage Scenarios High-altitude mountaineering / Snow mountain ascents Winter camping / Activities above the snowline Hiking and expeditions in extreme cold regions Static warmth at base camp / Technical outer or mid-layer use Note: Insulation may exceed practical needs in non-extreme cold or low-intensity activity environments. Materials & Technical Specifications Outer Shell: Windproof, water-repellent functional fabric Filling: 1000-fill power water-resistant white duck down Down content: 90% (GB standard) Construction: High-loft zoned filling Weight reference: Approx. 450g