Why It's CoolI know campers who bed down with a Nalgene full of hot water for extra warmth; my wife prefers our 20-pound pug. Seeing the two of them in the Van Winklewith its stretchy bands on the baffles for an extra-snug fitreminded me of a snake that had swallowed a mouse. Not that this bag needs auxiliary heat on cold nights; the 600-fill down does the trick. » For extra thermostat control, work the eight-inch zip on the side of the hood. » Nylon strips sewn to the lining along the full-length zip ensure there's never a snaga thoughtful touch.Hmmm . . .The hood is a little too spacious.