Mizuno Men's Wave Bolt 5 Volleyball Shoe 100% Synthetic Imported Rubber sole Parallel wave technology which uniformly disperses shock throughout the sole, providing excellent cushioning and enhanced stability Extra grade rubber. High traction grip to the floor Non-marking outsole. It does not mark the floor Dynamotion groove increases flexibility and agility while minimizing forefoot instability Dynamotion fit technology relieves the stress the foot naturally places on footwear - eliminating distortion for the perfect fit.