The Hard Truth About Cooling a Rooftop Tent Let me save you some money upfront: cooling a tent or RTT is harder than heating one. Way harder. A tent has the insulation value of a paper bag. The sun beats down on your roof all day, the canvas or aluminum absorbs that heat, and by 9 PM your sleeping space is still radiating it back at you like a toaster oven. Top Pick After comparing the field, this is the one I’d spend my own money on. Check price on Amazon Check Price on Amazon → I le