Coming in the wake of the hugely successful and iconic Tech 10 and Tech 7 the new Tech 5 is an advanced multi-material, multi-panel construction boot that further strengthens Alpinestars line-up of class-leading motocross and off-road boots. Incorporating an innovative microfiber chassis, which is extremely durable and lightweight, a medial biomechanical pivot system for excellent levels of support and stability and extended accordion flex zones, the Tech 5 affords performance fit and high levels of comfort and durability. Upper constructed from innovative and light 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 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 self-aligning design for precise closure Exclusive high grip rubber compound outsole. The sole is replaceable. CE certified.