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Be ready for an uptempo run in the KARHU Fusion 3.5.
This swift and nimble shoe has been streamlined with a new upper and engineered for faster turnover. The Fusion features Karhuâs 3/4 length Fulcrum in the midsole that provides the quickest roll out of the Karhu shoe lineup. It concentrates the cushioning toward the heel and midfoot, creating a responsive rocker shape that stabilizes each step and propels you forward.

The plush and propulsive ride is also thanks to Karhuâs AeroFoam midsole, which is lightweight and more temperature resistant than the traditional EVA midsole foam. It provides super-soft landings, while an added propulsion unit energizes take-offs.

The new upper features a breathable engineered mesh that is designed with an intricate venting pattern and reinforced with glue print toe accents and a sleek heel counter. This new upper looks more stylish and feels more comfortable than ever.

The womenâs version of the Fusion 3.5 features HeraFit, which is based on measurements from Fleet Feetâs 3D foot scans. From these scans, Karhu discovered that the instep and forefoot of menâs and womenâs feet measured significantly differently. So Karhu adjusted the volume and circumference of the instep and forefoot to better fit womenâs feet. 

With the KARHU Fusion 3.5, you will be rolling through your runs.

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