The SIDI ST Boot features a hinged external support structure for helping to prevent lateral ankle movement while allowing for smooth fore and aft transitions on the bike. A set it and forget it cam lock closure system on the calf enables easy entry and accommodates a wide variety of calf diameters. All bolt-on components are replaceable.

• Patented and trademarked Sidi Vertebra System protects the achilles tendon
• Thermoplastic resin ankle protection
• Replaceable to sliders
• Composite inner sole
• Removable arch support
• Nylon shin deflector plate
• Perforated Lorica outer construction
• Double stitched in all high stress areas
• All bolt on parts are replaceable
• An elastic panel adjacent to the entry zipper allows a bind free zip and improved fit
• Dual compound sole
• DuPont polymer toe shift pad
• Perforated Teflon treated nylon lining
• Replaceable shock absorbing heel cup
• Padded achilles area
• External ankle support braces with closable air vents
• Cam-lock buckle system