Anti-Heat/Sun Film?

[Baldchap]

Planning a drive to Spain in summer with the pup in the back. Anyone know of any films or coatings that I can put on the rear glass to prevent the boot becoming an oven?

[Miserablegit]

https://solarplexius.co.uk

[pills]

If you want a less permanent solution

https://www.carshades.co.uk/information/why-choose...

[rodericb]

If you don't mind it being permanent then a ceramic "tint" (or rather, film). It'll block out some huge percentage of infrared and ultraviolet light. You can get it in a few different grades of light transmission (tint level) so if you are not the type to get tinted windows you can get a very light tint.