Out here on the High Plains of Eastern NM it can get pretty cold at night. DW and I went out to Oasis State Park for an overnighter this past weekend to see how comfortable my RTT(Roof Top Tent) with annex would be when the temps drop into the teens. It was about 55 degrees when we set up camp and by 7 pm it was 30 degrees with an overnight low of 17. Sitting around the fire listening to Porcupine Tree watching the stars and sipping Crown Royal, man it doesn't get any better. With the Little Buddy Heater we stayed roasty toasty all night when we turned in for the evening. We even had some noisy visitors in camp(large pack of Coyotes).