This is the most minimalist sandal in the Luna Sandal series, designed for road running and racing. The 9mm Vibram outsole, 3mm thicker than the previous model, provides just the right amount of cushioning while allowing you to feel the road surface directly, giving you a barefoot feel. The MGT Grip is an ultra-grip material that won't slip even when soaking wet. This is an original Luna Sandal model.