UPPER Multi-panel upper with seamless Alcantara big toe panel extending under the ball of the foot and seamless four-toe panel for the best custom molding fit. Soft touch Microfiber fabric in the heel giving a second skin fit with top level sensitivity. INSOLE ¾ length Flexan 1 mm for good edging support. ACTIVE RANDING SF works like a hand, wrapping the foot from below and firmly holding it in position. The single rubber piece protection randing around the toe area is a highly effective tension system at the same time. The advantage of the single piece is that there are no interruptions, like in multi-piece constructions, and it follows and adapts pefectly to the dynamics of foot movements.SOLE 3.5mm Vibram® XS Grip 2 sole.