FITS TRACKBALL MOUSE M-XT2 SERIESDesigned to fit your ELECOM Trackball mouse M-XT2 series both wired and wireless. Made of EVA which is hard, flexible plastic with low-temperature toughness and stress-crack resistance, protecting your trackball mouse inside the case, for example damage from external causes, e.g. dropping. COMPATIBILITY WITH WIRED / WIRELESSBoth wired and wireless can be stored perfectly. The case has a pocket for a USB receiver and a USB cable to organize well.