New millennium 2 sole.SPD compatible,an arch compression strap for enhanced stability and fit. It's built on the extra-rigid, mud-spewing Performance sole.
Strengths: fit for slightly wider feet, durabiity of entire shoe is phenominal. The millennium sole to allow different types of pedal/cleat combinations
Weaknesses: The millennium sole that accommodates different types of cleat/pedal can be a nuisance. If you use Look type pedal/cleat combos you will always get a little squeak from the integrated sole plate not contouring exactly with the inner part of the shoe.
