So the cream of the crop is the SIDI Ergo 3 Vent Carbon Road Shoe. Includes the new Vent Carbon Sole which is lighter than previous versions and can be vented anytime your heart desires. It also has a redesigned adjustable heel retention device for improved comfort and efficiency.
NEW Vent Carbon Sole: Same incredible stiffness as SIDI's world-beating Carbon Lite Sole, 38 grams lighter, with vents that can be opened and closed for 4-season comfort
Redesigned Adjustable Heel Retention Device:The best heel closure available gets better, with a wider design, ventilated lower cut, and softer, more compliant material for improved comfort and efficiency
New Vented Dual Density Insoles
Caliper Buckle two-way ratchet for easy, incremental tightening and loosening
Soft Instep Closure System and padded tongue eliminate pressure points
Patented Techno II Buckle System precision ratchet monofilament closure for a one-click adjustment in either direction
High Security Velcro won't shift or slip
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