The Alpinestars Tech 5 Boots feature an upper constructed from innovative and light microfiber material with action leather on toe box. A redesigned instep and achilles accordion flex zones demand even more comfort while contoured TPU calf protector plate, TPU higher medial protector and TPU outer lateral ankle provide protection and stability. For additional bash-resistance, an injected TPU shin plate is connected with the TPU medial protector panel. VELCRO brand closures upper closure, plus TPR flap provides for a broad ranging calf fit adjustment and support. The TPU higher medial protector is designed with technical texture for improved grip.