The Solar Shield collection combines exceptional warmth and lightweight with advanced active insulation to regulate body temperature. The fluffy fibers and mesh structure lock in heat during rest and prevent overheating during intense activity. It's ideal for trail running, road running, hiking, and climbing. It can be packed into a chest pocket for easy storage, features a stowable hood for added protection, and offers customizable ventilation with a two-way zipper and adjustable hem for comfort in varying conditions.