The Tri Zone Collection
The Tri-zone jacket collection is a unique, versatile jacket system from Viking. The Tri-zone system includes two parts: the outer element barriers, and the inner thermal layers, which zip together to create 3 jacket options for 3 different levels of protection against the elements. You can wear the jackets in the Tri-zone system as: both the liner and the element barrier, for very cold conditions where you need 100% waterproof protection; just the outer element barrier shell, for wet but moderate conditions; and the liner, for more casual or dry conditions. All items in the Tri-zone collection come with Tri-zone's double zipper system, which secures the layers together at the torso, while buttons and snaps secure the arms so that the inner layers don't slide around. Some thermal layers or element barriers are sold separately, so mix and match for ultimate versatility.