Check out my cold weather sleeping bag setup. I use a cot when I can to put more air between me and the ground Then I put a thick memory foam mattress on top next I unroll my canvas bed roll on top of my sleeping pad Which is already stuffed with a negative 50 rated fleece sleeping bag and a heavy wool blanket folded inside This bed roll is awesome, especially for cold leather camping It's water repellent seals in my body heat and keeps my sleeping area clean and free of sticks and leaves It comes with dowel rods that prop up the vent in the front which helps fresh air circulate without making me too cold You can even pull the canvas flap over the vent to further protect yourself from the cold This warm cozy setup fits easily in a tent or in the back of my car. Plus, it's barn cat approved