The Karakal X4 Ankle Sock  has the ultimate shock absorbing technology, with quad density layers in the toe, heel and ball of the foot.The Karakal X4 Sock also comes with Lycra arch support and fully reinforced Lycra ribbed ankle and are anatomically designed for left and right foot fitting. Manufactured using Karakal Cool Tec material, that wicks moisture away from the skin allowing your feet to breathe, the X4 include anti-slip rubber dots on the sole for added stability.