Flated brand inflatable camper shell and bed.  Fits full size 8’ truck bed. Works great! Bought it a couple months ago. Only used once. Ended up with a trailer so no need for it anymore. Easy to inflate and install. Can do it with one person. Withe windows off it stays nice and cool or install the windows easily to stay nice and warm. 
Links below to the website for full details. Complete package is $2800 new. Asking $2000 obo
Save yourself some money and waiting for it to arrive. Perfect way to finish the season. 

https://flated.com/products/full-long-mr80

https://flated.com/products/full-standard-deck66