The Alpinestars Tech-10 Boots feature a lightweight upper which combines full-grain leather with lightweight microfiber and impact and abrasion resistant TPU shell. Innovative, evolutionary TPU shin-plate construction for greater range of fitment features a reinforced Velcro closure for comfortable, highly customized closure. The shin zone incorporates TPU blade system engineered to prevent frontal hyperextension and provides greater flex control. Evolutionary design for lateral flex zone provides front and rear flexion support and helps prevents torsion. Medial-facing panel constructed from TPU with rubber insert for maximum grip contact with bike and improved heat and abrasion resistance.