I would recommend against purchasing this bag.
It certainly has plenty of space, but it is poor in terms of form factor and security. I can forgive the backpack being too wide (it borders on being square), but the poor protection it affords is unacceptable for such an expensive bag.
My MBP has a large dent in its casing now after a ~2 foot drop from my bed. I used to use a Brenthaven (for an older PB) and I regret trying out Booq. Really piss-poor performance on Booq's part, especially when my Brenthaven for a third of the price had protected my old laptop flawlessly.
Review: BOOQ’s Python™XM[system] Laptop Backpack