Mizuno Women's 'Wave Enigma 4' Running Shoe mesh New refined fit includes a lower, more open, yet secure, collar and fantastic midfoot wrap. New forefoot outsole pattern with deep flex grooves works with an articulated forefoot Wave plate for an ideal blend of pliability & heel-to-toe guidance for a flowing, efficient ride. Outsole features X10 in high wear areas and lightweight blown rubber in the forefoot for optimal underfoot feel. Striking design was inspired by the bright lights of Downtown Tokyo and intended to exude a fast, sleek futuristic look.