SD, I have experience with the military Wiggy's bag, not bad, heavier than it needs to be and bulky due the poly fill. I prefer down, as long as I can keep it dry. For my personal bags I have a North Face Cat's Meow, a great polyfill bag and I have a Marmot down bag, +10 degrees. One aspect of sleeping bags, look at real hardcore travelers, like Mt Everest climbers, Denali climbers, or other serious adventurers, they always have NF or Marmot or Sierra Designs, etc. Never Wiggy's. WIggy's seems to sell to the military and thus has some followers. Way overrated and over priced IMHO! Cheers