Lut Socks are Legendary boots in Diablo III. They require character level 8 to drop. They are specifically designed for Barbarians, allowing those to use Leap three times (one normal cast, and up to two free casts in the cooldown window). While it may seem not the most important bonus, in reality they are intended for use with the Might of the Earth set, resulting in casting Earthquake three times in succession, plus a normal cast. The only drawback is that the remaining cooldown reduction effects (including the set's bonus for 2 items) will not work during the 2-seconds window.