The women's KARHU Fusion 4.0 is crafted to take your running experience to the next level, providing effortless propulsion with every step. This shoe is a perfect choice for runners in search of neutral running shoes that also deliver the speed and performance of fast running shoes. The redesigned Fusion 4.0 offers a plush, responsive ride that's ideal for neutral runners. With new features and enhancements, it excels at creating a smooth heel-to-toe transition, ensuring a dynamic and responsive feel underfoot, regardless of your pace. The update incorporates soft IdealKnit mesh for enhanced breathability and comfort, while the nitrogen-injected AeroFoam midsole provides increased rebound. Additionally, the deflection channel at the base of the midsole improves impact absorption, delivering an even more cushioned running experience. The KARHU Fusion 4.0 is an all-in-one option for runners who value comfort, performance, and responsiveness. At KARHU, we recognize that every runner's feet are different, and this understanding shaped the latest updates to the Fusion 4.0.