The Alpinestars Supertech R motorcycle boots are iconic race boots that are CE certified. The Supertech R boots are made from lightweight yet ultra-durable microfibre, which is water-resistant and highly flexible without compromising protection with the bonus of being extremely easy to clean. External TPU shin protectors give superior protection alongside replaceable polymer heel plate sliders, and separate internal bio-mechanical ankle braces work with the boot's outer structure to form a protective system allowing full and free movement of the foot ankle and leg. Integrated replaceable co-injected TPU/Aluminum toe sliders feature easy screw fixing and protects the outer toe box structure from abrasion. The external TPU shin protection is ergonomically shaped and wraps around to outer calf, and is engineered to spread and dissipate impact energy across the surface while remaining compact. The front flex area is constructed from over-injected TPU on breathable mesh for a comfortable ride, and the shin plate features micro-adjustable ratchet top closure for a safe and precise fit. Full-length medial-facing microfibre panels give excellent grip and feel against the bike and protect from abrasion and heat. In contrast, soft TPU stretch panels on lateral sides provide easy closure with the perfect fit. The zip is made from TPU to reduce friction in the event of a crash. A Velcro tab locks the zip pull closed, keeping it flat and secure. The sole is lightweight and made from a rubber compound sole, and offers excellent grip and feel. The Supertech R has superior levels of flexibility with stretch at the Achillies, accordion stretch panels at the entry/exit to allow natural movement and support. The top gaiter follows the leg contour and is made of flexible high-grade synthetic leather reinforced with PU, and a gear change reinforcement pad is flexible and lightweight to allow feel while changing gears.