Miche interchangeable bags - 3 shells, 1 insert

MIche is a purse company that offers purse inserts with interchangeable shells. I have 1 black insert and 3 shells. They must stay as a set. The insert is approximately 14 W X 12 H X 4 D. The straps are 22 inches. There are multiple pockets within the insert including cell phone pockets and pen holders.