The Alpinestars SMX-S boots are CE-certified to the EN 13634:2010 standard. Made with a durable microfiber upper for comfort and fit, these boots feature advanced internal and external protection features. The SMX-S boots include an ergonomic front design, breathable lining, and Alpinestars' unique rubber compound sole for optimized levels of support and performance. Key features include: - Durable microfiber upper for maximum flexibility and comfort. - New ergonomic last for improved aerodynamic performance at the forefoot, higher precision at the controls, and exceptional overall foot profile, fit, and comfort. - Race-proven, ergonomically optimized, TPU shin protector for superior impact and abrasion resistance. - Side TPU-injected ankle support for enhanced protection and stability. - TPU dual-density ankle protectors on both lateral and medial sides for outstanding all-around protection. - Breathable textile lining with anti-slip suede reinforcement at the heel area. - Replaceable bi-injected TPU sliders with a new screwless fixation concept for quicker and easier replacement. - TPU shift pad with technical texture for protection and grip. - Medial-side opening/closure system with a zipper mounted on an elasticated panel and a wide Velcro closure for flexibility and secure fit. The wide entry opening makes the boots easier to put on and take off. - Internal toe cap protection layered under the upper for durability, enhanced feel, and performance. - New removable dual-compound anatomical footbed integrating EVA and Lycra for performance, comfort, and support. - Alpinestars' unique rubber compound sole for enhanced feel and grip, water drainage, and durability.