ADIDAS ADIZERO PRIME X2 STRUNG from website: Neutral & Racing | High Cushion | 6.5mm Heel Drop Features/Benefits: Limits are meant to be pushed. Go beyond what you thought possible in these adidas running shoes. Designed for long-distance runs, they feature superlight Lightstrike Pro cushioning for ultimate comfort and responsiveness across the miles. The adidas STRUNG upper provides a seamless, lightweight cocoon around your foot that supports every stride. Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste. Regular fit Lace closure STRUNG upper Textile lining Lightstrike Pro cushioning Weight: 10.4 ounces (size 9) Continental Rubber outsole Upper contains a minimum of 50% recycled content