KARHU FUSION 4.0 Men's (Sky Gray / Green Flash)

*This product will take 5 to 8 business days to ship from the time of your order (business days exclude Saturdays, Sundays, and holidays).
*Other products ordered in the same order will be shipped together at the same time.

The ultimate all-in-one shoe "FUSION 4.0"

About KARHU

"A TRADITION OF SPORT & INNOVATION"

KARHU is a Finnish sports shoe brand with over 100 years of history.
Karhu means "bear" in Finnish. As the name suggests, the brand is characterized by a "bear" icon and vivid colors typical of Scandinavia.

New in the Performance Collection: "FUSION 4.0"

FUSION, the smoothest and most propulsive running shoe in Karhu's performance collection, has been updated to version 4. The new update seamlessly accelerates the heel-to-toe transition for a responsive ride underfoot, no matter the pace.

The Fusion 4.0 is the ultimate all-in-one shoe for runners looking for a unique blend of comfort and performance.

Technologies Karhu Fusion 4.0

・Fulcrum + propulsion unit

In addition to being lightweight, flexible and stable, Fulcrum technology creates smooth, quick weight transfer and high propulsion, providing a comfortable running experience whether you're running at an easy pace or picking up the pace. This shoe is ideal for neutral runners who want variety in their running workouts.

-Ergonomically designed for a comfortable fit

ORTIX technology, developed based on 3D scan data of over 4 million feet, provides a snug fit that feels like it's molded to your feet from the moment you put them on.

-Highly cushioned AeroFoam midsole

The new nitrogen-infused AeroFoam midsole provides an upgraded foam that boosts rebound and flexes at the bottom of the midsole to absorb shock and provide a more cushioned feel.

-Knit-M-Lock lacing system for optimal breathability and support

Stress-free upper construction made from IdealKnit mesh, which is softer and more breathable.

KARHU'S TECHNOLOGY

FULCRAM

KARHU Fulcrum technology is designed to direct all force forward, reducing braking forces and harnessing your body's natural energy for a smoother ride. This is what we call the rolling effect. Fulcrum technology provides a balanced combination of cushioning and improved support.

ORTIX

Ortix Fit uses data collected directly from the feet of over 2 million runners to mold the midsole and upper volumes. Starting in 2018 with the launch of the Karhu Ikoni, the first model molded with ORTIX, Ortix Fit now offers all footwear models with ORTIX Fit based on actual scan data in Regular, HiVo and Hera volumes.

M-LOCK

The internal bootie construction and M-lock side panels keep the shoe locked in place.

IDEAL KNIT

The seamless woven upper pattern is placed on an Ortix last that features zones for support, stretch and breathability.

AERO FOAM

Our proprietary midsole foam is lighter than EVA, more resistant to temperature changes, and has excellent cushioning.

AERO FOAM NOVA

The proprietary foam has improved shock absorption and is more durable than other foams.

detail