The Thorlo running socks feature specially sculpted Thorlo pads in the ball and the heel to provide protection from impact where need the most. This is only the essential padding as Thorlo has opted for a significantly lightweight performance sock. In addition, the socks feature a moisture wicking treatment that wicks moisture as it\'s produced, transfers it to the outer layers of the fabric where it can then be easily evaporated, ensuring you stay cool and comfortable.