^ I have the expandable flap from this season and was debating between the two. The leather is the same, it is stitched calfskin. It definately is not as durable as the caviar leather, but I don't think it will scratch easily unless you really abuse it. The leather is similar to my Chloe Betty shoulder bag and I have used that a lot without a single scratch. I found that the leather on the expandable range seemed a lot more durable than the leather on some of the other fall bags like the bubble quilt and the Sharpey range. If you like Modern Chain than the glazed calfskin makes it a bit more durable but the Modern Chain is too heavy this season IMO. The GST will have the most durable leather being Caviar but some Pfrmers find the shape too boxy and it is a bit heavier than the expandable tote.