I have two labs that love to go on camping adventures with us and they hang out in the back.
It would get hot back there from the sun coming through the windows and I'm very conscious about keeping my guys comfortable and safe.
So I made some cheap sun shades for the rear windows.
I bought two Dollar Tree sun shades. However you can do both rear windows with one window shade so I might try to do my rear passenger windows too.
The sun shades are extremely flimsy and dont have any structure whatsoever. So I made some templates and cut them out of cardboard (ironically from our recent Chewy.com purchase). Glued the sun shades (cut to fit) down and used some gorilla tape to hold down some zip tie pulls to pull them out when not in use.
Work great and should help out!
Enjoy!