sun shades

I'm looking for some sun shades (although it's winter atm, but not in a rush) to see what can be used
Haven't noticed any official MB merchandise... does anyone know of any that works well?

eg the TRD ones work great (though u have to pay for the trd name)

I bought the biggest one I could find at Super Cheap Auto for my previous car and it works with the GLA too. It covers the windscreen from the bottom to the top!

I'll take a pic next time I use it.