ALPINESTARS TECH 5 MX BOOTS BLACK/ GREYALPINESTARS TECH 5 MX BOOTS BLACK GREY FEATURES Upper constructed from innovative and light microfiber material with action leather on the toe box. Redesigned instep and Achilles accordion flex zones Contoured TPU calf protector plate, TPU higher medial protector and TPU outer lateral ankle. Injected TPU shin plate connected with the TPU medial protector panel; hook and loop upper closure, plus TPR flap for broad ranging calf fit adjustment and