The Ultraboost 5X shoes are the fastest Ultraboost made by adidas to date. Fine-tuned to deliver a balance of comfort and speed, these running shoes deliver lightweight responsiveness to your runs. The flexible upper is designed to match your movement for a supportive fit. While a lace closure provides a secure, personalized wearing experience that you can adapt on the go. The Light Boost midsole technology offers soft cushioning with dynamic rebound for easier and smoother strides and more consistent form. Finished with a durable rubber outsole for consistent traction on varied surfaces, these shoes are engineered by adidas to let you focus on your running goals in comfort.