Mizuno Men's Wave Lightning Z Volleyball Shoes - Navy & Red 3 Layer Seamless upper provides lighter and improved fit. Dynamotion Groove and D-Flex Groove increases flexibilty and agility on the court. Parallel Wave plate and PoWnCe midsole offers premium cushioning without compromising weight. D-Flex Groove enables smooth and easy weight shifting. Dynamotion Fit that is more durable and flexible