* The Pro System Expansion 3-Pak Includes * 250 cc jar * 150 cc jar * 100 cc jar * Removable Twist n" Lock Pill Organizer Expand the storage of your BlenderBottle ProStak with three additional jars and a Twist n" Lock pill tray. Extra 100cc and 150cc jars double the initial capacity of your system, while a large 250cc jar offers ample room for even the largest protein, meal replacement, and on-the-go nutrition needs.