Mizuno Women's Wave Rally 4 Volleyball Shoe Synthetic and mesh Imported Rubber sole New Zigzag Mizuno Wave Technology uniformly disperses shock throughout the sole, providing excellent cushioning and enhanced stability. Air Mesh and synthetic upper offers breathability, support and comfort. Midsole ventilation system reduces heat and humidity build-up inside the shoe during performance. Full length EVA midsole provides excellent shock absorption and cushioning.