The adidas X9000L4 'White Sky Tint' for women is designed to provide optimal energy return with its full-length Boost midsole. This midsole also includes an extended heel, which ensures a seamless and natural transition during each stride. To enhance grip on different surfaces, the shoe features an adaptive-traction rubber outsole that is developed using computer-generated data. The upper of the shoe is made from engineered white knit textile, with reflective silver detailing to improve visibility during nighttime runs.