It's a Kooba Braedon or Braeden. It's been spelled both ways in Kooba's history. It's the smooth black leather variety which is nice and thick and very slightly distressed. It's from 2006. It's a heavy bag and slim so things will tend to have to be stacked inside it since it doesn't have a big width.
Here's one in Terraine. The Terraine one looks pretty well worn.