My Wife, two dogs and I spent a lovely extended weekend in the Rockies west of Fort Collins, Colorado at about 8000'. Highs in the seventies, lows in the forties. Was comfy in my Skeeter Beeter Pro, Snugfit, sleeping bag as a quilt, t-shirt and light fleece pants with bed socks. Only complaint-the horse-type-flies were big and hungry. At one point my big dog had three feeding on his snout. When I wiped them off, it looked as though he was punched in the nose! In the end a great time was had by all. We really love the mountains. Hope you enjoy a few pics of our site.