The inner layer stays with the foot, the outer layer moves with the shoe; eliminating friction on the skin and reducing wear. The unique Tactel inner layer wicks away perspiration to the moisture-absorbing outer layer, keeping you damp-free and comfortable on longer distance days. Top venting increases breathability; upping the airflow to prevent uncomfortable heat buildup and keep you happy and motivated. Arch bracing and a Y-heel feature to improve support and create a customised fit, while HeelPower technology grips the heel firmly in place; reducing in-shoe slippage for smooth, distraction-free strides. Keep dedicated feet happy!