Alpinestars® DRYSTAR® waterproof membrane Extended PU coated leather gaiter to seal out excessive water ingress Wide entry for convenience Calf fit adjustment Double self-aligning, quick-release/locking polymer buckle system for secure fit Anatomical EVA footbed PU coated leather upper Microfibre flex bellow at calf TPU ankle, shin and calf protection Bio-mechanical lateral “flexi-blade” system to support and protect ankle Internal toe and heel protection TPU shiftpad with technical texture and internal reinforcement and padding Alpinestars® exclusive vulcanised rubber sole for optimal comfort and grip Unique dual branding