The Viking professional arctic 300D tri-zone hi-vis jacket is perfect for cold weather construction, OIL work or other industrial needs. The jacket comes with a detachable stormblaster hood, dual reflective chest straps for ID badges, cell phones and/or radios. The outer shell zips together with a 125 gsm thermomaxx insulated ultimate arcticlite liner to become a 3-in-1 insulated system. The liner can be worn by itself to protect you in temperatures as low as -20c/-4F.