The rubber belt is designed without skirt/apron, and it’s of cloth gearedge structure(in general,the life cycle of gearedge structure is more than fifteen years). With this structure, there will be no fatigue damages caused by the repeated stretch & contraction of the skirt/apron, and  the driving powerwill be reduced .The driving power of MitsubishiVBF is only 1/4 of those of other brand VBF. On the contrary, the life cycle of Skirt/Apron structure for rubber belt is generally one year.