New Mizuno Women 7 Wave Voltage Indoor Court Volleyball Shoe Navy White Silvr 7:Navy White Silver Scandium Titanium 13 D(M) US:Gray Black White Scandium Titanium compact construction allows you to take your practice on the go Rebound cord secures training balls to eliminate chasing balls all over the field Develop and Enhance Key Skills Rebound design integrates essential skills that benefits any position Training ball returns to you with the same force applied on throws to simulate match speed Helps predict ball trajectory and build consistent catchability Dura Shield: Protects toe from the damage of friction to the floor INTERCOOL: Cool and dry Ventilation system reduces heat and humidity build up inside the shoe during performance D Flex Groove: Diagonal flexible groove