Featuring K-Swiss' proprietary technology, the Tubes 200 is one of the most recognizable sneakers in the Tubes family. With a one piece closed-hole mesh upper for breathability and seamless overlays for extra support, there is not much adaptation time needed. The Tubes technology provides adaptive 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.