Upper constructed from innovative and lightweight microfiber material with action leather on 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 and TPR flap for broad-ranging calf fit adjustment and support, TPU higher medial protector is designed with technical texture for improved grip, Bio-mechanical pivot, Ergonomic TPU triple buckle straps, Incorporates innovative one-piece TPU injected dual-compound foot shell, reinforced by a metal shank inside and co-injected toe reinforcement, TPU heel patch connected with shell and lateral/medial TPU sections, Extended PU synthetic gaiter helps seal out excessive water and dirt entry, Soft polyfoam surrounds the ankles and collar, Full inner textile lining, Closure system includes four polymer buckles with an innovative closure system that includes a ratchet with memory and a quick-release/locking system with self-aligning design for precise closure; all buckles are replaceable, Replaceable anatomic EVA footbed with textile lining on top, High-grip rubber compound outsole, Sole is replaceable