Mizuno Men's Wave Bolt 4 Volleyball Shoes - White & Black Parallel Wave technology which uniformly disperses shock throughout the sole, providing excellent cushioning and enhanced stability. Non-marking outsole. It does not mark the floor. Dynamotion Groove increases flexibility and agility while minimizing forefoot instability. Shock absorbing mid-sole material. Shock absorption and Cushioning. VS-1 absorbs shock and enhances cushioning properties. Cool and dry. Offers great breathability. Ventilation system reduces heat and humidity build-up inside the shoe during performance.