Nike Zoom Freak 4 TB features: Lightweight and durable foam built into the outer-side midsole provides great stability. Cutouts in the foam under the toe and heel help reduce overall weight. Reoriented energy return allows moving forward with ease. Computer-generated outsole with a pattern-like topographical map optimizes ground contact and allows versatile movements. Molded grooves in the rubber outsole enable flexibility. Worn for 1 season of indoor volleyball