Mizuno Men's Wave Tornado X Volleyball Shoe 100% Synthetic Imported Rubber sole Infinity wave is the next level of wave technology with a more visible and effective construction. 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.