This insert is designed to hold sleeved cards. Built specifically for a customer and taking advantage of my free insert for copy of game plan - this insert holds the base game and Cosmic Incursion, Cosmic Conflict expansions with additional storage for additional player pieces, alien cards and flare cards for the Cosmic Alliance expansion. NOTE: In the 2 longer, removable, trays used to hold the player pieces, I have decided to remove the middle divider to allow more space for the ships to fit. I felt that this was a minimal change that would allow for better storage of player pieces.