I recently purchased this bag, for my husband. We're avid snow campers, and have been slowly upgrading all of our gear. He's been having trouble finding a bag that fits him around his chest and shoulders, comfortably. I purchased this bag, because of it's weight, at under 3lbs for a 0 degree bag, with 800 fill, and the stretch capabilities, I thought it would fit my husband perfectly. I was right! He was snug as a bug, with the temps dropping into the single digits our first night out this season. He loves the stretchiness allowing him to move with more freedom and yet stay warm as it just "hugs" you right back up again. The water resistant material, kept the icecrystals that dropped from the top of the tent in the morning hours, from soaking the bag too much, keeping it nice and lofty. It's a little pricey, but so worth it!!