The Tecnica Advanced 4 outsole features a newly designed polyurethane midsole and a new Vibram outsole. Back to the Top Bio-Flex technology creates natural flexion in the upper while anatomically wrapping the foot for increased support. This technology allows the upper to match the mechanics or flex of the foot throughout the stride. Flex areas are engineered to have less resistance. Effectively creates the support of thicker leathers without inhibiting forward flex.
Added support helps resist pronation and keeps the foot and ankle properly aligned.
Maintains support and foot retention - will not stretch when wet. Protects ankle bones Back to the Top Tecnica has worked together with Vibram to develop a new outsole called Vibram Trail Lite. This was achieved by studying the lug configuration and base thickness of the outsole to insure superb traction using the least amount of rubber weight. The Vibram Trail Lite has a polyurethane midsole. Standardized process reduces the number of manual operations required giving predictable quality.