Worn only once. A lightweight hoodie that combines breathability and insulation. Perfect for high-output activities in cold environments. The versatile Proton is ideal for climbing durability and trail lightness, functioning as a standalone piece or a mid-layer. Excellent breathability and thermoregulation ensure comfort even with changing temperatures and activity levels. Octa Loft knit insulation provides warmth while also managing moisture and ensuring breathability for lasting comfort. The abrasion-resistant Fortius Air 20 material offers stretch and wind resistance, while its breathability helps regulate the temperature inside the garment. A zippered chest pocket stores small items, and the articulated design enhances freedom of movement. The insulated, low-profile hood fits comfortably under a helmet. Updated with an improved fit. ● Materials: Fortius Air 20 (84% nylon, 16% polyurethane), Octa Loft insulation (100% polyester) ● Weight: 343g ● Fit: Trim fit ● Color: Solitude