It has two layers of nylon with about 1/4 inch padding sanwiched between them, a bit thicker on each end. The pocket is 11 inches square and a few inches deep. It's designed to fit a fork mount so the evolution would easily fit with room for extra padding if desired. I'll get a couple of pics up tomorrow.
Thanks for the pictures, looks like it would be great for carrying out in a field, but I'm looking for something a bit more robust. Best of luck with the sale.