The North Face Women's Jecs Triclimate 3 in 1 Jacket. The North Face's Triclimates are the ultimate all weather jackets. The Jecs is a 3 in 1 jacket which is made up of a breathable, waterproof HyVent® shell with a warm, detachable synthetic inner jacket. This 3 in 1 combines these two zip-in protective layers to create a waterproof and breathable jacket which can adapt to changing weather conditions. You can wear the shell and inner separately on warmer days to combat the elements, or combine them to insulate yourself from cold and wet weather. So buy this The North Face Women's Jecs Triclimate 3 in 1 Jacket Now £99.00.