The Viking Thermomaxx Jacket is so named because it is designed to keep you warm, even in cold weather. The jacket can protect without adding bulk, and is tested to temperatures reaching -20°C. It has a lined collar for greater user comfort and an elastic draw cord with toggle adjusters. What’s more, the Thermomaxx can be combined with other jackets to expand its functionality. It is compatible with the 6410 Arctic, 3910JB Thor, 3910BB Thor Bomber, and 848 Tri-Zone.