Chanel Women's Black Business Affinity Backpack Caviar and Python Size Medium Description Chanel Women's Black Business Affinity Backpack Caviar and Python Size Medium. This rare Chanel Business Affinity backpack was made of black caviar leather and has python leather details. The backpack is accented with gold hardware and features a CC closure on the front flap and a drawstring cord underneath. In addition to the two back straps, the bag also has a silver chain handle on the top.