| Brand | Karhu |
| Model | Fusion 5.0 |
| Year | 2026 |
| Gender Version | Unisex |
| Category | Daily Training Tempo Run Speed Training |
| Terrain | Asphalt |
| Midsole Technology | AeroFoam nitrogen-infused midsole (short Fulcrum propulsion unit) |
| Carbon Plate Structure | None (Fulcrum propulsion structure) |
| Upper Material | Lightweight breathable mesh upper |
| Outsole Configuration | Lightweight rubber outsole |
| Forefoot Thickness | 18.0mm |
| Heel Thickness | 26.0mm |
| Drop | 8mm |
| Weight | 235g |
| Fit | Snug |
| Breathability | (3/5) |
| Stability | Normal |
| Cushion Distribution | Even |
| Feel Attribute | Lightweight, Responsive, Agile |
| Bounce | (4/5) |
| Running Style Recommendation | Neutral |
| Runner Level | Advanced |
| Weight Range | Light |
| Width | Standard |
| Arch Type | Medium |
| Landing Type | Forefoot |
| Price | $140.00 USD (approx.) | Durability | 500 km |
The Karhu Fusion 5.0 is Karhu's lightweight speed-oriented trainer, designed for runners seeking quick response. It features AeroFoam nitrogen-infused midsole with a shorter Fulcrum propulsion unit for snappy propulsion and quick cadence. The 26mm/18mm 8mm drop platform and lightweight build excel in tempo runs and interval training. More responsive than previous generations.
