These sneakers are ready to get in on the action. They feature a patented Tubes system that uses technology which provides unmatched comfort and cushioning through individually-tuned tube structures that collapse and rebound as you walk. The design also provides incredible flexibility making every stride smooth and efficient. Smaller, more rigid tubes on the inside area of the heel provide extra medial support to reduce pronation. A lightweight mesh upper provides additional coolness and breathability to make these sneakers one of the most comfortable trainers you will ever experience.