Hi, does anyone have these, they are attached re hook and loop system, ie velcro, as i understand it velcro sticks to window glass, though i could be wrong. Do these work at reducing condensation, keeping heat in? Are there any issues with velcro on windows? Is the velcro easy to attach? We have external silverscreen for cab windows, but need thermal internal screens for side windows and tailgate to reduce condensation and keep heat in. Thanks in advance CazzaG
