OEM complete rear window shades
 

I got learned about this from a post here on the main page. I am reposting because I am pretty sure the parts numbers were backwards or incorrect.
The first shade is for the back window. It collapses easily when not used and willl fit in the storage bag for the Cargo Qtr shades.
p/n 82-11-0-008-342 Rear window sunshade $49

The second item is the cargo qtr window shades. 2 pieces per order.
p/n 51-46-0-141-062 Rear side window sunshade $79

Both items install with supplied sticky back velcro. The side windows really don't need it. They remove easily and do a nice job of blocking the sun and enhancing any tint already there.

we have had these installed for a year now and love them. never take them out. they help reduce heat gain and don't obstruct view. super cheap!

yup

Don't they reduce your outward vision, especially at night? (Even just the quarter windows?)

yes, any tinting or shade does reduce nightime vision - and there are (some) state laws concerning how much tinting is legal - but tinting does cut down both glare and heat, without too much loss of nightime vision, if you don't go overboard with the degree of tinting