Nike Men's Mercurial Victory IV IC Soccer Cleat Leather Speed becomes a major factor, and the Nike Mercurial Victory IV indoor soccer shoes are made to maximize your speed. The sleek, lightweight synthetic produces explosive speed while maintaining ball control and support. The textured upper has a highly responsive fit while the microgrooves reduce air resistance and enhance the touch. The Vapor traction pattern is designed for multidirectional acceleration and the rubber outsole provides a low profile, keeping you closer to the ball. Synthetic.