I was very pleasantly surprised to see there is a good bit of difference between the Tan and the Whiskey colors. And just as I've been reading on tPF, the Whiskey 06 leather is thicker than 05. It's very pebbly all over, but especially on the back and it's very smooshy. My Tan 05 is smooth and only minimally pebbly on the sides, and collapses totally flat when empty. I love them both, and I think this Whiskey is a keeper, especially at almost half off!