The Alpinestars Tech 5 off-road motocross boots are constructed from ultra-lightweight Microfibre with leather on the toe box. These offer 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; Velcro upper closure, plus TPR flap for broad-ranging calf fit adjustment and support, the TPU higher medial protector designed with technical texture for improved grip, bio-mechanical pivot, ergonomic TPU triple buckle straps, incorporating 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 poly-foam surrounds the ankles and collar, entire textile lining, new closure system includes 4 polymer buckles with an innovative closure system. This closure includes a ratchet with memory and a quick release/locking system with a self-aligning design for precise closure; all buckles are replaceable. Replaceable anatomic EVA footbed with textile lining on top. This also offers an exclusive high-grip rubber compound outsole, and the sole is replaceable.