About this item COMPATIBILITY: Fit perfectly on M50x /M50xBT /M50xSTS/ M50RD /M40X /M30x /M20xBT /M20x /SX1 /MSR7 Monitor Headphones. OUR INGENUITY: Experience ultimate comfort with our high-quality football texture fiber and high-density foam, designed to wick away sweat and provide anti-slip properties even during long use sessions. FLAWLESS INSTALLATION: A detailed and step-by-step User Guide is included, making the entire installation easy and fast (usually 5 mins). TIME TO CHANGE YOUR OLD ONES: Why not buy new covers for your headphones? Make them look brand new again. Size: 7.8 x 5.31 x 0.91 inches.