I do a lot of camping in very cold weather and I'm not exactly a tiny person. Neither is my husband. We both fit in this tent very comfortably being the size we are and in 22 degree weather we were VERY warm in this sleeping bag. It was well worth what we paid for it and then some. Before we got this sleeping bag, we didn't sleep well camping because it would be so cold we would shake all night, but this time other people came out of their tents saying they didn't get a good nights sleep because it was too cold. And we got good sleep!So, this sleeping bag is wide enough for bigger folk (200+) and warm enough for REALLY cold weather.Another cool feature it has is this piece that you can pull over your face and head if you want to, and it has this slight indention to where you can still breath, or tunnel as I call it. So your nose and mouth doesn't freeze.