Fusion 4.5 men

Technical specifications

Category: Excellent cushioning
Offset: 6 mm
Weight: 302 g
Ideal for: runners looking for a shoe with good cushioning and excellent stability, with a smooth transition, for medium-long distance runs.
Athlete weight: 75-85 kg
Running pace: medium (5.00-6.00 min/km)
Technical specifications guide

The KARHU Fusion 4.5 for men is a versatile trainer designed for neutral runners who want a balanced mix of comfort, responsiveness and performance. Combining soft cushioning and energetic response, it supports smooth transitions from heel to toe, making it ideal for fast-paced runs, daily training and workouts.

The nitrogen-infused AeroFoam midsole offers responsive bounce and superior comfort, while the IdealKnit mesh upper improves breathability and fit. The new redesigned tongue provides greater softness and a premium feel to the foot, while reflective details increase visibility in low light conditions.

Technical details:
– Midsole: Nitrogen-infused AeroFoam for cushioning and responsiveness
– Shortened Fulcrum + Propulsion unit for an efficient stride
– Upper: updated IdealKnit mesh, breathable and comfortable
– M-Lock lacing system for a secure midfoot fit
– Redesigned tongue, softer and more comfortable
– Reflective details for improved visibility