I bought an Ossie shades one for the front in 2016
Buy Windscreen Sun Shade - Australian Car Windscreen Cover for Sun Protection - Universal Standard Size - Premium Grade Reduces Interior Temp by half - Sun Shield Protector for Extreme Conditions at Amazon UK. Free delivery on eligible orders.
www.amazon.co.uk
Down side not sold under that name now.
Dimensions:
150cm(60″ base) x 80cm (32″ height) this sunshade will protect your car, SUV or Truck and allow you to enjoy the entire drive home
Basically it uses a twisted compact action so they fold into a bag. Wire frame that twists down. You use the visor to drop down and hold them in place.
I did spot similar on Aliexpress recently so suspect it was a Chinese company that was behind them and re-branded.
Back on Amazon I reckon it's model 2 of this one
Buy Car Sun Shade Windscreen SunShade, Car Front Windshield Shades Sun Reflector Block UV Ray Keep Your Vehicle Cooler Flexible Size for SUV Van Truck Front Window Blind Large Silver 160 x 86 CM at Amazon UK. Free delivery on eligible orders.
www.amazon.co.uk
I'm sure there are other clones. That one bags up the same and can be stored under the front seat. Suspect these twist and put away ones are not as good at lasting than other versions but for occasional use they do, and don't take up space. The old white towel on leather seats trick can be used if you dont put the blinds up.