Up for sale is the Free Spirit Recreation Extreme Series Roof Top Tent (Keeping the trailer :) ). This is an extremely high quality tent, with fabric, stitching, and materials much more durable then the standard RTTs you would find on offerings from Smittybilt or the like. This has been living on my offroad jeep trailer and used sparingly for the last 2 years. 

Some upgrades to the tent I have done are a vapor barrier mat to improve circulation, steel reinforced the attachment points to the roof rails to better handle off-road adventures, and upgraded the interior lighting with a full length LED strip and controller/dimmer with memory so if you turn it off on dimmer setting, it will come back on at that same level and won't blind you in the middle of the night :)  

Tent still looks brand new. Does great in the wind or rain. Light color rain fly reflects sun to help keep the tent cool when exposed. Entry/Exits on both sides, and all four sides open up fully or with mesh protection for great views and airflow. Sleeps 2 adults and 1 kid (or maybe 2 dogs) comfortably. 3 adults could fit but it would be tight. I'm 6' 4" and had no issues.