The Wilson Tour large backpack is LARGE.
Wilson Tour V Backpack
This seems to be a new version for 2016, the Wilson Tour V Large Backpack. It comes in three colors.
Paul Hargrave at PDH Sports has a review here:
Here’s the blue one:
Image via pdhsports.com
Buy (UK): pdhsports.com
Buy (US): holabirdsports.com