Dimensions of genuine roof bars, which size Audi carrier is better?

Hi folks,

I can't currently get to my roof bars to measure em' but I wanted to know if they fit better into Audi roof bar carrier 'size 1' or 'size 2'?... (or maybe there is a better storage/carrier bag?)

Dimensions of the actual bag's seem to be:

Size 1 8R0071156C - 1200 x 270 x 150
Size 2 8R0071156D - 1250 x 300 x 200

Thanks!