About this item Headphone Replacement Headband Cover compatible with M50X M50 M40X M40 M30X M20X Headphones. This is a zippered headband cushion and its installation is very simple. No need to remove the original headband. Headphone Replacement Headband Cover can be used to cover your worn-out headband or protect it from scratches. Package Contents: Headphone Headband Cover X 1. Replacement Headband Cover Compatible M50X M50 M40X M40 M30X M20X Headphones. Dimensions: 7.3 x 6 x 0.7 inches.