Worn by some of the world's greatest champions, Alpinestars Supertech R Ventilated boots have been completely redesigned for even greater performance. Designed for competition, they feature multiple perforations for optimal air circulation and superior comfort. Thanks to feedback from professional riders, this new version benefits from major improvements in protection, comfort and ergonomics, with a new shin guard, a redesigned inner liner and increased flexibility. Construction High-quality microfiber upper with laser perforations for excellent breathability and abrasion resistance. New flexible front zone promotes natural movement while optimizing impact resistance. Redesigned stretch microfiber rear gusset for improved comfort and mobility. High microfiber gaiters with TPU over-injection for optimum fit. New synthetic microfiber side panel for improved contact with the bike. Lightweight rubber outsole for maximum grip on footrests. Protection and safety Newly redesigned shin pad for improved shock absorption and abrasion resistance. Replaceable shin slider for optimized protection. New TPU protector for improved durability and impact resistance. Removable biomechanical inner liner in 3D mesh for improved structure and comfort. Soft TPU reinforcement on the outer toe area for enhanced impact protection. Toe slider in TPU and co-injected aluminum, replaceable via an easy-to-screw-on fastening system. Newly designed heel slider for improved protection and slipperiness in the event of a fall. CE EN13634:2017 approved. Comfort and ergonomics Zipper with stretch TPU panel for easy donning and precise fit. Hook-and-loop fastener secures zipper slider. Micro-ratchet closure on top of boot for secure fit. New design promotes ventilation and air circulation for optimal cooling while riding.