The all-new Men's Fusion 5.0 in Black / Bamboo is the latest in the line-up of the updated neutral trainer. This silhouette is specifically designed for runners seeking a balanced blend of cushioning and performance. Featuring a 6mm heel-toe offset, more robust foam package, refined fit, and a redesigned Fulcrum, the Fusion 5.0 offers a silky-smooth experience that will make you want to run again and again.
The men's Fusion 5.0is ideal forlong runsandfaster workouts.
Built for runners seeking a smooth and energetic ride, the KARHUFusion5.0 introduces the next generation of KARHU running technology.
A repositioned Fulcrumunit guides the foot efficiently through each stride, creating a more propulsive running experience. Combined with an amplifiedtoespring, the Fusion 5.0 delivers a responsive toe-off with added momentum and energy return.ÊThe midsole features all-new AeroFoamNOVA, allowing for a higher stack height and a softer, more cushioned ride with improved rebound. A criticalfoaminsole provides durable underfoot comfort that maintains its performance over time.
Designed for a balanced fit, the Fusion5.0 offers a secure midfoot lockdown while maintaining ample room in the toe box, creating a comfortable running experience for everything from daily training to longer mileage days.
Technologies of the KARHU Fusion 5.0 - Repositioned Fulcrum unit for a more propulsive ride - AeroFoam NOVA midsole with increased stack height - Critical foam insole for long-lasting cushioning - Amplified toe spring for an energetic toe-off - Secure midfoot fit with a spacious toe box - Engineered upper construction for comfort and support
Weight US10: 280 g / 9.9 oz Heel-to-toe drop: 33 mm – 27 mm
We ship to most countries in the EU. Your order is prepared for shipment on business days the next morning after you placed your order. Typically, the warehouse is able to manage and send out your order the same day, or the next morning after they start processing it!
US Men's Size
UK Size
EU Size
Shoes Length (mm)
8
7
41.5
263 mm
8.5
7.5
42
268 mm
9
8
42.5
272 mm
9.5
8.5
43.5
276 mm
10
9
44
280 mm
10.5
9.5
44.5
285 mm
11
10
45
289 mm
11.5
10.5
46
293 mm
12
11
46.5
297 mm
12.5
11.5
47
301 mm
13
12
48
306 mm
14
13
49
310 mm
15
14
50
315 mm
The updated Fusion 5.0 is designed for runners seeking a balanced blend of cushioning and a propulsive ride.
TECHNOLOGY
The KARHU Fulcrum technology is designed to keep all forces going forward, reducing braking forces and using your body's natural energy to create a smoother ride. It's what we call the Rolling Effect. Fulcrum Technology provides: Balanced Cushioning, Increased Support, More Energy. The Fusion features a three-quarter length fulcrum.
OrtixFit shapes your mid sole and upper volumes using data directly collected from over 4 Million runner's feet. What started in 2018 with the launch of the Karhu Ikoni the 1st model shaped by ORTIX, we now offer all our footwear models with our ORTIX Fit, based on actual scanning data in regular, HiVo (more volume) and Hera (women specific) Fit volumes. Karhu collaborates with Volumental(TM) and Fleet Feet(TM) create personalized fit experiences.
I'm having to return these as they're too tight. I ordered the size up as this website recommended, and I ordered the HIVO variant, so I was disappointed to find out that the tongue is elastically strapped to the base. Why would you design a 'high volume' shoe with elastic that straps your feet in with a vice grip? This makes them unusable for people who need more room within the shoe. Such a shame as the rest of the shoe seems good.
P
Pasquale D’Alessio (United Kingdom)
How does it fit?:
Too small
Too big
Usual size worn:10.5
Size purchased:10.5
Perfect Running Companion
As were my first Fusion 2021 these Fusion 4’s were hugely improved & so supportive & comfy.
Will always get Karhu for running shoes.
A
Anonymous (United Kingdom)
How does it fit?:
Too small
Too big
Usual size worn:9
Size purchased:9.5
wearing K since about 35 years.
Never had an issue with my feet. That is why I stay with these shoes. Perfect fit for me.
I'm having to return these as they're too tight. I ordered the size up as this website recommended, and I ordered the HIVO variant, so I was disappointed to find out that the tongue is elastically strapped to the base. Why would you design a 'high volume' shoe with elastic that straps your feet in with a vice grip? This makes them unusable for people who need more room within the shoe. Such a shame as the rest of the shoe seems good.
P
Pasquale D’Alessio (United Kingdom)
How does it fit?:
Too small
Too big
Usual size worn:10.5
Size purchased:10.5
Perfect Running Companion
As were my first Fusion 2021 these Fusion 4’s were hugely improved & so supportive & comfy.
Will always get Karhu for running shoes.
A
Anonymous (United Kingdom)
How does it fit?:
Too small
Too big
Usual size worn:9
Size purchased:9.5
wearing K since about 35 years.
Never had an issue with my feet. That is why I stay with these shoes. Perfect fit for me.
