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
KARHU Size Guides
STEP 1
Place a piece of paper on the floor with one end against the wall. Put your foot on the piece of paper with your heel against the wall.
STEP 2
Take a pencil and mark the end of your longest toe on the paper. Repeat for your other foot.
STEP 3
Measure in cm from the wall (heel) to the longest point (toe). Take the larger measurements. Than take what you measured + 0.5 CM and compare it with our shoe sizes in the size chart.
Find your perfect KARHU shoe size with our complete size guides for lifestyle sneakers and running shoes. Compare US, UK and EU shoe sizes with foot length in millimeters (mm) to ensure the best fit for every KARHU model. Fot both sneakers and performance running shoes, measuring your foot length is the most accurate way to choose your ideal size.
KARHU Lifestyle sneakers size guide
This KARHU Lifestyle Sneakers Size Guide helps you choose the correct shoe size by comparing US, UK, EU and foot length in millimeters (mm). If you're looking for the Fusion 2.0, Legacy 96, Fusion XT, Mestari 76, Super Fulcrum, Fusion XC or any other KARHU sneakers, using your foot length is the most accurate way to determine your size. We recommend measuring your feet while standing and comparing the measurement with the chart below. If you are between two sizes, consider choosing the larger size for additional comfort.
| Shoes Length(mm) | US Men's Size | US Women's Size | UK Size | EU Size |
|---|---|---|---|---|
| 230 mm | 4 | 5.5 | 3 | 35 |
| 234 mm | 4.5 | 6 | 3.5 | 36 |
| 238 mm | 5 | 6.5 | 4 | 37 |
| 243 mm | 5.5 | 7 | 4.5 | 38 |
| 246 mm | 6 | 7.5 | 5 | 39 |
| 251 mm | 6.5 | 8 | 5.5 | 39.5 |
| 255 mm | 7 | 8.5 | 6 | 40 |
| 259 mm | 7.5 | 9 | 6.5 | 40.5 |
| 263 mm | 8 | 9.5 | 7 | 41.5 |
| 268 mm | 8.5 | 10 | 7.5 | 42 |
| 272 mm | 9 | 10.5 | 8 | 42.5 |
| 276 mm | 9.5 | 11 | 8.5 | 43.5 |
| 280 mm | 10 | 11.5 | 9 | 44 |
| 285 mm | 10.5 | 12 | 9.5 | 44.5 |
| 289 mm | 11 | 12.5 | 10 | 45 |
| 293 mm | 11.5 | 13 | 10.5 | 46 |
| 297 mm | 12 | 11 | 46.5 | |
| 301 mm | 12.5 | 11.5 | 47 | |
| 306 mm | 13 | 12 | 48 | |
| 310 mm | 14 | 13 | 49 | |
| 15 | 14 | 50.5 | ||
| 16 | 15 | 51.5 |
KARHU Running Shoes size guide
KARHU Men's Running Shoes size guide
This KARHU Men's Running Shoes Size Guide helps you find the right fit by converting US, UK, EU sizes and foot length in millimeters (mm). For the most accurate fit, measure your foot from heel to toe while standing and compare it to the size chart below. Running shoes should provide enough room in the toe box to allow your feet to expand naturally during longer runs. If you're running in the Fusion, Ikoni, Mestari Run or another KARHU performance model, selecting the proper size helps maximize comfort, stability and efficiency on every run.
| 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 |
KARHU Women's Running Shoes size guide
This KARHU Women's Running Shoes Size Guide allows you to compare US, UK, EU sizes and foot length in millimeters (mm) to ensure the best possible fit. We recommend measuring your feet at the end of the day when they are at their largest and comparing your measurement with the chart below. If your measurement falls between two sizes, choosing the larger size often provides extra comfort for longer distances. Using the correct size helps you get the most out of every training session and race.
| US Women's Size | UK Size | EU Size | Shoes Length (mm) |
|---|---|---|---|
| 6 | 4 | 37 | 234 mm |
| 6.5 | 4.5 | 37.5 | 238 mm |
| 7 | 5 | 38 | 243 mm |
| 7.5 | 5.5 | 39 | 246 mm |
| 8 | 6 | 39.5 | 251 mm |
| 8.5 | 6.5 | 40 | 255 mm |
| 9 | 7 | 40.5 | 259 mm |
| 9.5 | 7.5 | 41.5 | 263 mm |
| 10 | 8 | 42 | 268 mm |
| 10.5 | 8.5 | 42.5 | 272 mm |
| 11 | 9 | 43 | 276 mm |
| 12 | 9.5 | 44.5 | 285 mm |
FUSION
Guidance
Cushion
Propulsion
IKONI
Guidance
Cushion
Propulsion
MESTARI RUN
Guidance
Cushion
Propulsion
MEN'S FUSION 4.5
BIT OF BLUE / SKYDIVER
$120.00$160.00
MEN'S FUSION 4.5 HIVO
MONUMENT / BLUE HAZE
$120.00$160.00
MEN'S FUSION 4.5
MONUMENT / BLUE HAZE
$120.00$160.00
MEN'S FUSION 4.5
FOGGY DEW / ALLOY
$120.00$160.00
MEN'S FUSION 4.5
PLUM KITTEN / WET WEATHER
$120.00$160.00
MEN'S FUSION 4.0
SKY GRAY / GREEN FLASH
$120.00$160.00
MEN'S FUSION 4.5 HIVO
FOGGY DEW / ALLOY
$120.00$160.00
