Soft instep closure system . Is adjustable from both sides . Tecno-3 push system . Can be adjusted while riding . Single tecno-3 push . Creates perfect balance between the shoe's internal and external side . Adjustable heel retention device . Each side of the heel can be adjusted independently, for a perfect fit . Sidi heel cup . Stabilizes and supports the heel . Replaceable heel pad . A replaceable polyurethane heel pad . Vent carbon sole . Designed with an integrated vent and air channels . Handmade exclusively of carbon fiber . Opposing angles maximize stiffness
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