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Guidance
Neutral
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Cushioning
Neutral
Weight
302g in size US10
Drop
6mm
Karhu MEN'S FUSION 4.0 HIVO
IBIZA BLUE / MOOD INDIGO
$120.00$160.00
F101811
Cushion
Guidance
Propulsion
Drop 6 mm
Weight 10.7 oz
Weight 302 g
Colour
Run type
Faster run
Surface
Road
Guidance
Neutral
Cushioning
Neutral
Weight
302g in size US10
Drop
6mm
The men's KARHU Fusion 4.0 HiVo provides a plush and propulsive ride ideal for the neutral runner. New additions and adjustments to the Fusion 4.0 make this shoe exceptional at seamlessly accelerating the transition from heel to toe-off, ensuring a responsive underfoot experience regardless of pace. This update utilizes soft IdealKnit mesh for improved breathability and comfort. Most notable is the incorporation of new nitrogen-injected AeroFoam in the midsole. This upgraded foam provides increased rebound, while the addition of a deflection channel at the bottom of the midsole helps absorb impact and provides a more cushioned experience.
The HiVo version is more than just a "wide" as it accounts for feet with higher insteps, greater instep girths, flat, and all-around larger-than-average feet.
The KARHU Fusion 4.0 is the ultimate all-in-one shoe for runners seeking a unique blend of comfort, responsiveness, and performance.
Details Karhu Fusion 4.0 HiVo -Shortened Fulcrum + Propulsion unit for an efficient stride -Nitrogen-infused AeroFoam midsole -Updated IdealKnit mesh construction with improved breathability -M-Lock lacing construction ensures a secure midfoot
The men's KARHU Fusion 4.0 HiVO is sure to elevate your run and propel you forward.
The Fusion 4.0 provides a plush and propulsive ride ideal for the neutral runner. New additions and adjustments to the Fusion 4.0 make this shoe exceptional at seamlessly accelerating the transition from heel to toe-off, ensuring a responsive underfoot experience regardless of pace. This update utilizes soft IdealKnit mesh for improved breathability and comfort. Most notable is the incorporation of new nitrogen-injected AeroFoam in the midsole. This upgraded foam provides increased rebound, while the addition of a deflection channel at the bottom of the midsole helps absorb impact and provides a more cushioned experience.
The KARHU Fusion 4.0 is the ultimate all-in-one shoe for runners seeking a unique blend of comfort, responsiveness, and performance. At KARHU, we know every runner has unique feet, and it’s this as our starting point that has resulted in the newly updated Fusion 4.0.
The HiVo version is more than just a "wide" as it accounts for feet with higher insteps, greater instep girths, flat, and all-around larger-than-average feet.
The KARHU Fusion continues to be built on a growing database of over 4 million 3D scans from runners’ feet.
Technologies Karhu Fusion 4.0 HiVo -Fulcrum + Propulsion Unit -IdealKnit -Ortix Fit -Nitrogen-infused AeroFoam midsole -M-Lock lacing system
Weight US10: 302g / 10.7 oz Heel-to-toe drop: 6mm
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 men's KARHU Fusion 4.0 is a highly responsive, cushioned running shoe for neutral-footed runners. It is sure to elevate your run and propel you forward.
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 1/4 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.
Men’s fusion 5.0 was a pleasant surprise. Very good fit with built-in support and a soft yet responsive ride. Definitely. Found a top place in my shoe rotation.
M
M.H. (Columbia, US)
How would you describe the fit?:
Too small
Too big
Size purchased:11
Usual size worn:10.5
New Runner Very Impressed
My last time looking into running shoes predates the current foam revolution and I was very confused about what shoe to try. The step in comfort when I put these on was out of this world, and the running feel is just a joy all around.
F
Francisco Zamora (Columbus, US)
How would you describe the fit?:
Too small
Too big
Size purchased:12.5
Usual size worn:12
My First Pair but Not My Last
This is my first pair of Karhu running shoes but they would definitely not be my last. I was so impressed with the fit and the support of my Fusion 5.0 shoes. I wore them around for my daily errands before I took them out for a run to break them in. I found out that I really didn't need to do that and at these shoes were ready to go out of the box. I will definitely be getting a second pair.
Men’s fusion 5.0 was a pleasant surprise. Very good fit with built-in support and a soft yet responsive ride. Definitely. Found a top place in my shoe rotation.
M
M.H. (Columbia, US)
How would you describe the fit?:
Too small
Too big
Size purchased:11
Usual size worn:10.5
New Runner Very Impressed
My last time looking into running shoes predates the current foam revolution and I was very confused about what shoe to try. The step in comfort when I put these on was out of this world, and the running feel is just a joy all around.
F
Francisco Zamora (Columbus, US)
How would you describe the fit?:
Too small
Too big
Size purchased:12.5
Usual size worn:12
My First Pair but Not My Last
This is my first pair of Karhu running shoes but they would definitely not be my last. I was so impressed with the fit and the support of my Fusion 5.0 shoes. I wore them around for my daily errands before I took them out for a run to break them in. I found out that I really didn't need to do that and at these shoes were ready to go out of the box. I will definitely be getting a second pair.
