Ultralight LDN - Heat-Reactive Balaclava Jacket

Size Chart (CM) SMALL: Full Length 65, Chest 118, Shoulder 51, Sleeve Length 65 MEDIUM: Full Length 67, Chest 122, Shoulder 52, Sleeve Length 66 LARGE: Full Length 69, Chest 126, Shoulder 54, Sleeve Length 67 X-LARGE: Full Length 71, Chest 130, Shoulder 55, Sleeve Length 68 Thermoreactive Material Science Thermochromic Coating: The jacket's outer shell is treated with temperature-sensitive liquid crystals or micro-encapsulated dyes. These molecules change their orientation at specific "transition temperatures" (typically around 27°C to 31°C / 80°F to 88°F), shifting the fabric's color to reveal a lighter shade or a different hue. Body-Heat Activation: The reaction is triggered by both environmental temperature and physical exertion. High-heat zones (such as the armpits, back, and chest) often change color first, creating a dynamic, heatmap-like visual effect.