Feldherr foam set for Battletech: Mercenaries Box SetThe battlefields of the Inner Sphere are calling with the Battletech: Mercenaries Box Sets, the battle is on with revised rules and new units. To ensure that your mechs and accessories are safely stored and always ready for battle, our Feldherr foam set offers you the ideal storage solution for your game box. Custom designed foam insert for the original Battletech board game box: Limited Edition Mercenaries Box Set (dimensions of the insert: approx.