Ultra low profile designed to minimize weight at the lower section of the boot and upper design developed for controlled flexibility.

Features:

• Biomechanical inner bootie provides the ultimate in support and safety
• Torsion bars control ankle and leg rotation, while allowing freedom of movement
• Bootie structure designed for shock absorption on the heel and ankles with a thin, flexible forefoot for increased control
• Lightweight upper combines full-grain leather with impact and abrasion resistant PU shell
• PU guards the toes, foot, heel, ankle, calf and shin with extra hard compounds on the toe-box, heel and Achilles tendon
• PU spine protects the heel, controls flex and features a hyperextension guard
• Outer side of the boot has anti-torsion PU panel on the ankle for flexibility and support
• Ultra comfortable, precision fit interior features poly fabric lining with open cell foam and a shock absorbing shin pad
• New and exclusive dual compound sole is seamlessly integrated to multi-density foot base structure with built-in support
• Sole provides superior durability, grip, feel and a high level of structural rigidity
• Advanced closure system features 3 techno-polymer and aluminum buckles for easy adjustability with a precise, secure and streamlined fit
• Buckles feature memory, a quick release/locking system and a self-aligning design
• 3 buckle system works in conjunction with the entire internal structure to provide excellent support and flexibility
• Inner side of the boot is designed for maximum grip against the bike from top to bottom and features PU panels for heat and abrasion resistance
• New form fitting PU gasket seals water out of the boot
• White model features airflow ventilation system  

(Alpinestars boots run 1/4 to 1/2 size larger than standard street shoes.)