We bought a set of high-wind ones, and they're amazing in both hot and cool weather. Practically removes any radiant heat feeling from the bunks, also makes them darker in the daytime (perfect for naps).
We've used on a few cool nights (less than 50 degrees) and it reduced the amount of condensation in the bunk areas by a good 75%, and kept them decently warmer. Definitely took the sting out of the cold air.
We love them.
2017 Jay Flight 26BH (Elite)
2006 Chevy Silverado 1500 CrewCab 5.3L 3.23, (220k miles)
Equalizer 10k (Model 90001000)
Tekonsha P3 Brake Controller
Places we've camped: