The Shimano R171 Wide Fit Carbon Road Cycling Shoes have a supple, stretch-resistant synthetic leather upper with breathable open mesh, whilst the innovative 'Surround' upper pattern provides the perfect balance of holding power and all-day comfort. With an adaptable mechanical closure system which adjusts to various instep heights and steps, the bike shoes have a dual-density cup insole for heel bone stability. Boasting the Shimano Dynalast which improves peddling efficiency and offers a precise fit, the cycling shoes are set upon a lightweight carbon fibre composite sole with an adjustable cleat mount. - L.M. Features: Synthetic Leather: Lighter, stronger and more durable than natural leathers 'Surround' Upper Pattern: Provides the perfect balance of holding power and all-day comfort Open Mesh: Improves breathability Offset Straps: Asymmetric straps relieve pressure points Air Intake: Integrated air intake and exhaust system Shimano Dynalast: Provides a precise fit and improves peddling efficiency Carbon Sole: Carbon fibre composite sole Wider Cleat: Expands range for mounting cleats Designed For: On Road, Triathlon, Competitions Weight: 486g