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.Product Features Upper constructed from innovative, abrasion-resistant microfiber with synthetic polymer on toe box. Main microfiber material offers high levels of water-resistance, durability and improved weight-saving. Material ensures consistent fit for long term usage and is easy to maintain and clean. Medial-facing biomechanical pivot system links lower and upper parts of the boot and gives front and rear flexibility and structural support. Both the inward-facing upper and lower panels are constructed from specifically formulated polymer with grip sculpture patterning for maximum contact with bike and improved abrasion resistance Innovative one-piece TPU injected dual compound foot shell with excellent impact and abrasion resistance and unmatched levels of safety. This shell is reinforced by a metal shank inside and toe reinforcement co-injected in harder compound. Soft poly-foam surrounded the ankles and collar offer shock absorbing performance, plus full interior textile lining for comfort. Innovative buckle closure system incorporates polymer and fiberglass buckle arms and high-impact aluminum bridge closures for durability and weight-saving. Buckle system features memory and a quick release/locking system with self-aligning design for easy, precise closure and improved riding performance and security. All buckles are easily replaceable. The TPU buckle straps are ergonomically profiled to promote high levels of front flexion.