Weighing only 5 ounces, the Mountain Hardwear Men's Ghost Whisperer Down Vest is the lightest down vest on the market. The 800 fill Q. Shield down insulation resists moisture so you don't loose your warmth if snow starts to blow around. The stowable design makes it easy to bring along on ski tours, backpacking trips, and climbing excursions by stuffing it into one of its pockets. And with such a lightweight design, the Ghost Whisperer is incredible for layering, without adding a bunch of bulk to kit.