Karhu Fusion 4.5 Men

With the Karhu Fusion 4.5, you have the perfect shoe for your fast training sessions. Its responsive nature makes this model ideal for interval training, tempo runs, and other higher-speed workouts. Work on your speed with the fast and responsive Karhu Fusion 4.5.

Midsole

The midsole of this shoe is made of AeroFoam. This Karhu-patented material is lighter, more resistant to extreme temperature fluctuations, and more durable than traditional EVA foam. Using Fulcrum technology in the midsole, this shoe moves forward through balanced cushioning, offering greater support. The propulsion plate provides extra stability while running and propels you forward.

Upper

The Fusion 4.5 features an Ideal Knit mesh upper, offering a comfortable fit and high breathability. The upper features reflective details, ensuring you can run safely even in the evening. The M-lock system ensures secure foot lockdown while maintaining flexibility.

Outsole

With a rubber outsole, the shoe provides good grip and traction while running. Order the Karhu Fusion 4.5 today and experience the speed during your tempo and interval training within a few days!