^^^^^^GT, you can feel the difference if the 2 bags were side by side. Like I explained earlier, I was playing with Bolides one day, one mou, one rigide. Same size, same leather, but it was clear there was something in there that added to the structure of the rigide. I had read somewhere that there is an extra layer of leather in the sellier Kellys and that was confirmed by the Boyz at Luxury-Zurich. You can feel the difference with the 2 bags, the sides of the rigide Bolide were thicker.
AH!!! it pays to read a little more.
okay there you go, extra layer of leather.