Clarks tri alexia sandals using a grooved flex3 outsole which follows the natural volume curve and movement of the foot weve really embraced the sports luxe trend with this athletic sandal thick crossover straps and breathable linings add comfort while a sporty riptape strap fastens behind the heel the effortless sporty style outer black leather inner black suede sole black rubber fastening riptape narrow clarks c standard clarks d wide clarks e extra wide clarks ee