MWG TRANSMISSION™ (FR) base layer is ideal for cooler days. It fits comfortably beneath a sweater and jacket for another layer of warmth and protection. You can also wear it on it’s own, as it provides 9 CAL / CAT 2 protection from potential worksite hazards. It’s crafted from inherent MWG TRANSMISSION™ fire-resistant fabric that is thermal regulating and has flat lock seams for maximum comfort.