Karhu MEN'S FUSION 3.5 MERCURY / BELLWETHER BLUE 

$105.00$150.00

F100335

Cushion

Guidance

Propulsion

Drop 6 mm

Weight 10.6 oz

Weight 301 g

Colour

Select size

Size advice: Order 0.5 size bigger compared to your regular size.

Please select a size


The men's Karhu Fusion 3.5 is a highly responsive, cushioned running shoe for neutral footed runners. Whether going easy or pushing the pace, the forward propulsion and plush cushioning make your run comfortable and playful. The 6mm heel-toe offset, shortened Fulcrum, and propulsion unit result in a swift and nimble underfoot experience.
With every stride, the Fulcrum and propulsion unit will accelerate the transition from heel to toe-off, even during your easy runs.
The newly redesigned upper mesh is softer in the toe-box while the intricate venting pattern gives improved breathability. The Fusion 3.5 is an all-in-one shoe for the neutral runner with variety in their running workouts.

The Fusion 3.5 is also available in a wide fit, Karhu calls this High Volume (HiVo).

Details Karhu Fusion 3.5:
-Shortened Fulcrum + Propulsion unit for an efficient stride
-Highly cushioned AeroFoam midsole
-Updated Ideal Knit mesh construction with improved breathability
-M-Lock lacing construction ensures a secure midfoot


The men's Karhu Fusion 3.5 is a highly responsive, cushioned running shoe for neutral footed runners. Whether going easy or pushing the pace, the forward propulsion and plush cushioning make your run comfortable and playful. The 6mm heel-toe offset, shortened Fulcrum, and propulsion unit result in a swift and nimble underfoot experience. The newly redesigned upper mesh is softer in the toe-box while the intricate venting pattern gives improved breathability. The Fusion 3.5 is an all-in-one shoe for the neutral runner with variety in their running workouts.

The Fusion 3.5 is also available in a wide fit, Karhu calls this High Volume (HiVo).

At Karhu, we know every runner has unique feet, and precisely that given resulted in the new Fusion. The Fusion 3.5 is built from a growing database of over 3 million 3D scans taken from runners' feet. The Karhu Fusion 3.5 is literally created by the runner, for the runner.

Technologies Karhu Fusion 3.5:
-Fulcrum + Propulsion Unit
-Ideal Knit
-Ortix Fit
-AeroFoam midsole
-M-Lock lacing system

Weight US10: 300g / 10.5 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!
Delivery & Returns

 

Delivery

We ship orders with in the USA, Mexico, Canada, Australia and New Zealand only. All web orders are shipped from Fife, WA. If you would like to obtain a proof of delivery email us separately, any lost packages or items must be claimed through/with the carrier selected for the shipment.

Please note that during national holidays in the USA we aren't shipping.

Please note that Karhu can't deliver to PO Boxes.

We allow 48 hours for order processing after order placement. This is rare but can occur during peak shipping seasons. All tracking information is emailed 24 hours after the order is shipped.

 

 Country Transit time Carrier Duties & Taxes
USA*/**

 3 to 7 working days

Express shipping in the check-out available.

UPS Paid by Karhu
MX *** 7-21 working days USPS Paid by Receiver
CA *** 7-21 working days USPS Paid by Receiver
NZ *** 7-21 working days USPS Paid by Receiver
AU *** 7-21 working days USPS Paid by Receiver

 

* For shipping to Alaska, Puerto Rico, Hawaii, AFA, AFE and AFP there is a different shipping of $14.95. 

** Orders valued more the $100.- will ship Economy Free of charge. Otherwise there will be a shipping fee of $7.95.

*** Orders shipped outside of the United States are charged a shipping fee of $29.95.

 

 Returns

If you choose to return your product from within the USA for a refund, we will provide a prepaid return-shipping label and a refund for the amount you paid for your purchase, minus a $5.00 restocking fee per item returned. 

If you choose to return your product from outside of the USA for a refund, you will have to return the product at your own expense. We will issue a refund for your purchase, minus a $5.00 restocking fee per item returned.

Only product purchased directly www.karhu.com can be returned to our return processing center. Any unauthorized return of Karhu product will not be accepted or processed at our processing center. The sender of unauthorized returns will be responsible for all return shipment costs.

Return shipment may be sent to:

Regal Logistics
6500-26th Street East
Fife, WA 98424 United States of America

Accompanied by this return form: download here

Important: Product must be clean and the box in proper condition to be accepted.

Under garments such as briefs, boxers, undershorts, underpants may not be returned for size exchange or refunds due to hygienic reasons we can not restock these items.

All sneakers must be in the condition you received them and in the original box.
Warranty related product returns must be shipped to the same address as listed above. All products returned for warranty related reasons will be inspected upon the return of the product.

Please allow 2-3 weeks for processing.

For shipments outside the US or special regions Karhu won't provide a return label. We do except your return taking into account the conditions mentioned above. Please note that you ship your return Duties and Taxes paid. 

Size advice: Order 0.5 size bigger compared to your regular size.

Size guide

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.

 
 
Foot & Shoe Size (mm) US Men's Size US Women's Size UK Size EU Size
Foot: 221 mm Shoe: 230 mm 4 5.5 3 35
Foot: 225 mm Shoe: 234 mm 4.5 6 3.5 36
Foot: 229 mm Shoe: 238 mm 5 6.5 4 37
Foot: 233 mm Shoe: 243 mm 5.5 7 4.5 38
Foot: 237 mm Shoe: 246 mm 6 7.5 5 39
Foot: 241 mm Shoe: 251 mm 6.5 5.5  39.5
Foot: 245 mm Shoe: 255 mm 8.5  40 
Foot: 249 mm Shoe: 259 mm 7.5 6.5 40.5 
Foot: 253 mm Shoe: 263 mm 9.5  41.5 
Foot: 258 mm Shoe: 268 mm 8.5 10  7.5 42 
Foot: 263 mm Shoe: 272 mm 10.5  42.5 
Foot: 267 mm Shoe: 276 mm 9.5 11  8.5 43.5 
Foot: 271 mm Shoe: 280 mm 10  11.5  44 
Foot: 275 mm Shoe: 285 mm 10.5 12  9.5  44.5 
Foot: 279 mm Shoe: 289 mm 11  12.5  10  45 
Foot: 283 mm Shoe: 293 mm 11.5 13  10.5 46 
Foot: 287 mm Shoe: 297 mm 12    11  46.5 
Foot: 291 mm Shoe: 301 mm 12.5   11.5 47 
Foot: 295 mm Shoe: 306 mm 13    12  48 
Foot: 304 mm Shoe: 310 mm 14    13  49 

Note: The "Foot" size represents the actual measurement of your foot. The "Shoe" size represents the internal length of the shoe, which is typically slightly larger than the foot size to ensure a comfortable fit.

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.

Karhu US
Karhu US

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.

Karhu US
Karhu US

FUSION

KARHU Fusion 4.0 Fall/Winter 2024

Guidance

Cushion

Propulsion

IKONI

KARHU Ikoni 3.0

Guidance

Cushion

Propulsion

MESTARI RUN

KARHU Mestari Run 1.0 fall/winter 2024

Guidance

Cushion

Propulsion

Customer Reviews

Based on 151 reviews
85%
(128)
7%
(11)
5%
(7)
2%
(3)
1%
(2)
S
Susan Broderick
How would you describe the fit?:
Too small
Too big
Size purchased: 7
Usual size worn: 6.5
VERY HAPPY

COMFORT

J
John Despins
How would you describe the fit?:
Too small
Too big
Size purchased: 11.5
Usual size worn: 11

This is my fourth pair of these shoes. I bought the first two pairs at Fleet Feet who did an amazing job of sizing my feet. The bottom line is that these shoes fit me well.

j
james mulanaphy
Good fit.

Very comfortable. Well constructed. Glad I discovered your brand.

F
Faith
How would you describe the fit?:
Too small
Too big
Size purchased: 9.5
Usual size worn: 9
Good quality but runs small

I purchased a 9.5 size running shoe which is a half size larger than my usual size. They are much too tight in width and length even after trying to break them in. The quality of the shoe is great but I’d recommend going a full size bigger.

A
Amy Thieme
How would you describe the fit?:
Too small
Too big
Size purchased: 8
Usual size worn: 7.5
Best Sneaker

Comfortable, roomy, great support for entire foot. I have three pairs! Best sneaker!

MEN'S FUSION 3.5 - MERCURY / BELLWETHER BLUE

Size: