Fusion 5.0 Women

Technical specifications

Category: Daily Trainer
Offset: 6 mm
Weight: 240 g
Ideal for: neutral runners looking for a versatile, well-cushioned shoe for daily training and long distances, yet light, smooth and responsive enough to handle faster runs and high-intensity sessions
Runner’s weight: 70–85 kg
Running pace: 6:00–4:30 min/km
Technical Specifications Guide

The Karhu Fusion 5.0 Women’s are neutral running shoes designed to offer cushioning, smoothness and a propulsive response during road training sessions. This new generation of the Fusion features a higher, softer platform, a refined fit and a redesigned Fulcrum, creating a versatile shoe suitable for everything from daily runs and long distances to sessions where you want to pick up the pace.

The midsole utilises the new AeroFoam NOVA foam, developed to offer a softer, more cushioned ride with a more pronounced bounce. The platform measures 33 mm at the heel and 27 mm at the forefoot, giving a 6 mm drop, striking a balance between protection and responsiveness. The Critical foam insole adds further comfort underfoot and is designed to retain its cushioning properties over time.

One of the distinctive features of the Fusion 5.0 is the three-quarter-length Fulcrum unit, repositioned to guide the foot more efficiently during the stride. Fulcrum technology is designed to promote forward movement and reduce braking forces, creating the characteristic KARHU rolling effect. The increased curvature in the forefoot area completes this geometry, promoting a more energetic push-off and a smoother transition.

The fit has been designed to keep the midfoot securely supported whilst leaving more space for the toes, a combination that proves particularly useful as the mileage increases. The engineered upper contributes to comfort and support, whilst OrtixFit technology uses real scan data to define the volumes of the shoe and the upper; for women’s models, KARHU features a specific Hera construction.

Weighing just 240 g, the Fusion 5.0 Women’s manages to combine generous cushioning with a dynamic feel. It is therefore not designed solely as a shoe for gentle training: the combination of AeroFoam NOVA, Fulcrum and forefoot geometry also makes it suitable for long distances and faster training sessions, offering a versatile solution for most of your weekly sessions.