Alpinestars Supertech R 21 Motorbike Boots

· Durable and technical microfiber upper construction offering superb levels of flexibility. · Front flex area is constructed with a redesigned soft TPU over-injected on breathable mesh with a shaped relief for improved abrasion resistance and natural forward and back movements. · Flexible accordion microfiber stretch at Achilles allows natural movement. · Top gaiter follows leg contour and is made of flexible high-grade synthetic leather reinforced with PU for maintaining shape. · Full length suede microfiber panel on inner side of the boot provides a smooth surface for excellent grip and feel against the bike and protects from abrasion and heat. · Flexible, lightweight toe shifter allows feel for changing gears. · Strategically positioned ventilation in heel and shin TPU guides air through the boot on the vented version. · Extremely protective, flexible and comfortable with excellent aerodynamics. · Separate internal bio-mechanical ankle brace works with the outer structure of the boot to form a protective system allowing full and free movement of the foot, ankle and leg. · New external TPU shin protection wraps around to outer calf and is engineered to spread and dissipate impact energy across the entire surface while remaining compact. · Replacement clip-on shin-slider improves protection, while the vented section promote airflow into the boot. · Integrated replaceable co-injected TPU/ aluminum toe slider features new easy screw fixing concept provides feel and protects the outer toe box structure from abrasion. · Replaceable nylon heel plate slider protects from impact and reduces friction in the event of a crash. · Outside entry/exit has stretch accordion panel for a close fit and ease of entrance and removal. · Zip mounted on soft TPU stretch panel gives easy closure with excellent fit – additional TPU zip slider reduces friction in the event of a crash. · Hook and loop tab lock the zip pull closed, keeping it flat and secure. · Micro adjustable redesign ratchet top closure stows tab end. · Redesigned lightweight rubber compound sole offers excellent grip and feel and allows for natural flex as the rider changes position and pressure on the foot-peg. · According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply to this product: EN 13634:2010.