I just bought them in Nashville last week and used them on several long flights. Primarily I got them for PapaLima who often fled to the back of the airplane when Eastbound rather than get roasted in the copilot seat. I thought I would need to remove them when below Class A airspace to adequately watch for traffic but it turns out that the visibility is more than adequate with them in place. They do dramatically reduce the heat in the cockpit. They fit well.
