Key Features: 360° surround upper provides enhanced instep rigidity and achieves a true glove-like fit,Refined Dynalast™ to expand fit and comfort, Combination of non-stretch Kuraray Rovenica, Teijin Nanofront and PU laminated mesh ensures optimal foot stabilisation to minimise energy loss, New heel-cup construction optimizes efficiency by enhancing heel torsional rigidity, coupled with glass-fiber reinforced heel stabiliser, Deeper cup-shaped carbon mid-sole, Dual new BOA® Li2 dials – lower profile, twoway adjustability,Refined fit and comfort with 360° surround wrap and ‘Function Specific Zones’,Optimal pedalling power-transfer with reinvented mid-sole and heel-cup construction.