The women's KARHU Fusion 4.0 provides a plush and propulsive ride ideal for the neutral runner. New additions and adjustments to the Fusion 4.0 make this shoe exceptional at seamlessly accelerating the transition from heel to toe-off, ensuring a responsive underfoot experience regardless of pace. This update utilizes soft IdealKnit mesh for improved breathability and comfort. Most notable is the incorporation of new nitrogen-injected AeroFoam in the midsole. This upgraded foam provides increased rebound, while the addition of a deflection channel at the bottom of the midsole helps absorb impact and provides a more cushioned experience.

The KARHU Fusion 4.0 is the ultimate all-in-one shoe for runners seeking a unique blend of comfort, responsiveness, and performance.

The women’s Fusion 4.0 is built by women for women. By adjusting the circumference volume at the instep and forefoot, Karhu offers a personalized women’s construction: HeraFit.

Details Karhu Fusion 4.0
-Shortened Fulcrum Propulsion unit for an efficient stride
-HeraFit: women's specific last
-Nitrogen-infused AeroFoam midsole
-Updated IdealKnit mesh construction with improved breathability
-M-Lock lacing construction ensures a secure midfoot