The vest is an extremely versatile helper. It doesn't restrict movement, it isn't unnecessarily bulky and yet it will keep you warm. This men's vest from Columbia M POWDER LITE VEST will even actively warm you up because thanks to the reflective points of the Omni-Heat ™ system, it reflects back your own body heat. In addition, the drawstring at the collar, bottom hem and around the arms doesn't let the heat escape. The vest is also water resistant so the vagaries of the weather won't surprise you.