What curtain size?

i would like to know what curtain size i should get for my 1g gs300 the small or medium ? i was looking at the jp or bellezza one

You should actually just measure out your window.  The small ones are good for 37-41cm.  Mediums are 42-45cm i believe.

can someone please help?

For most sedans a small will do fine, if you want no sag in the curtain. A medium will fit most sedans as well but you will get some sag in the curtain. It depends on taste 90% of people are going to go with small, for the final word thought contact one our vendors!

If you decide on Bellezza, go with small.

I have a UCF10 and small for JP

Small.  All cars run different like a LS430 runs medium in front and small in the rear.  But on the GS it is small.

yea small jp curtains are perfect ...you might need to screw in ...

what about mercedes?
say umm the s-class?