Elevate your running experience with the men's KARHU Fusion 4.0 HiVO, a masterpiece designed for the neutral runner who craves a balance of plush comfort and dynamic propulsion. This latest evolution of the Fusion series introduces innovative features that cater to a smooth and efficient transition from heel strike to toe-off, making every run feel more responsive and exhilarating. The Fusion 4.0 HiVO leverages the softness and breathability of IdealKnit mesh, ensuring your feet remain cool and comfortable mile after mile.

KARHU FUSION 4 REVIEW

At the heart of the Fusion 4.0's exceptional performance is the nitrogen-injected AeroFoam midsole, a breakthrough in running shoe technology offering unparalleled rebound and energy return. Accompanied by a specially designed deflection channel, this midsole innovation significantly enhances impact absorption, delivering a supremely cushioned ride. The HiVO version goes beyond the standard wide fit, meticulously engineered to accommodate runners with higher insteps, greater instep girths, and generally larger foot dimensions, ensuring a perfect fit for a diverse range of foot shapes and sizes. Drawing on an extensive database of over 4 million 3D foot scans, the Fusion 4.0 is crafted with precision, incorporating the Fulcrum + Propulsion Unit for added stability and propulsion, Ortix Fit for tailored comfort, and the secure M-Lock lacing system. Weighing in at 302g and featuring a 6mm heel-to-toe drop, the KARHU Fusion 4.0 HiVO stands out as the ultimate all-rounder, ready to take your running to new heights.

Fulcrum

The KARHU Fulcrum technology is designed to keep all forces going forward, reducing braking forces and using your body's natural energy to create a smoother ride. It's what we call the Rolling Effect. Fulcrum Technology provides: Balanced Cushioning, Increased Support, More Energy. The Fusion features a three-quarter length fulcrum.

• Fulcrum + Propulsion Unit
• IdealKnit
• Ortix Fit
• Nitrogen-infused AeroFoam midsole
• M-Lock lacing system
• Weight: 302g
• Drop: 6mm