This vest features 40 g recycled synthetic insulation body-mapped at the front and collar for optimized warmth without bulk, preventing overheating during runs. It has a durable ripstop nylon shell with a PFAS-free durable water repellent finish. Breathable, water- and wind-resistant ripstop nylon panels are located on the back, shoulders, and sides. The vest offers a close-to-body fit with built-in mechanical stretch for ease of movement. Includes zippered chest and hand pockets, an internal clip for keys, and stretchy side pockets. It packs down into a side pocket and has reflective details.