Bests & Worsts Reviews from Amazon

I used this to cut window covers for my camper van. I have tinted windows, so I cut the panels to the dimensions of each window such that they would be held in place by tension. I then covered the side that faces outward with black fleece and stuck it down on back with duct tape. Once the insulation is fitted, the windows just look blacked out, instead of having that telltale glint that says, "This is a camper! Break in and steal stuff!". The insulation helped keep the temperature inside the van bearable on some 20°F nights. The reflective side facing inward presumably helped reflect heat back in. Combined with the fleece, the Reflectix kept light from coming in, making for a darker sleep environment. I did leave a 2" space at the tops of the largest windows so that we could have some sense of time, and also a way to see what was going on outside when needed. It worked like a dream! For winter, I did not experience any drawback to putting the fleece on the outside, and I highly recommend doing that - especially if you're a stealth camper.