Karhu WOMEN'S FUSION 4.0 BRILLIANT WHITE / ANEMONE 

£140.00

SKU_F201012

Cushion

Guidance

Propulsion

Drop 6 mm

Weight 250 g

Weight 8.8 oz

Colour

Select size

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

Please select a size


The women's KARHU 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.

The women’s Fusion 4.0 is built by women for women. By adjusting the circumference volume at the instep and forefoot, Karhu offers a personalized women’s construction: HeraFit.

Details Karhu Fusion 4.0
-Shortened Fulcrum + Propulsion unit for an efficient stride
-HeraFit: women's specific last
-Nitrogen-infused AeroFoam midsole
-Updated IdealKnit mesh construction with improved breathability
-M-Lock lacing construction ensures a secure midfoot


The women's KARHU Fusion 4.0 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 KARHU Fusion continues to be built on a growing database of over 4 million 3D scans from runners’ feet. The women’s Fusion is the first shoe built by women for women. By adjusting the circumference volume at the instep and forefoot, Karhu offers a personalized women’s construction: HeraFit.

Technologies Karhu Fusion 4.0

-Fulcrum + Propulsion Unit
-IdealKnit - Ortix Fit
-nitrogen-infused AeroFoam midsole
-M-Lock lacing system

Weight US8: 250g / 8.8 oz
Heel-to-toe drop: 6mm


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!
Delivery & Returns

Returns and Refunds 

We accept returns of all items within 15 days of receiving the order with the right to full refund minus a return fee of £5.00. A return label by Royal Mail is included in your shipment and a refund for the amount you paid for the returning item, minus a £5.00 shipping fee per return will be charged. If you are missing the return label or need to make a second return, please email our Customer service department at customerserviceEU@karhu.com to provide you a new return label.
 
We accept returns of all items within 15 days of receiving the order with the right to full refund of the product minus a £5.00 shipping fee per return.

Your return will be accepted if the goods are returned in the same condition as when you received the order. If the item has been used, damaged, washed, altered or missing tags/labels (for apparel), we are entitled by law to charge you a fee for the depreciation of the item. 


We will process your return and issue a refund within maximum of 30 days. Refunds will be issued via the original method of payment.

 

Exchanges

We don't do exchanges at Karhu at the moment. If you would like to change your item for a different color or size, please return your item and place a new order. 

 

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

Size Guide Running Women

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 Women's Size UK Size EU Size
Foot: 216 mm Shoe: 225 mm 5 3 35.5
Foot: 221 mm Shoe: 230 mm 5.5 3.5 36
Foot: 225 mm Shoe: 234 mm 6 37
Foot: 229 mm Shoe: 238 mm 6.5 4.5 37.5
Foot: 233 mm Shoe: 243 mm 7 5 38
Foot: 237 mm Shoe: 246 mm 7.5 5.5 39
Foot: 241 mm Shoe: 251 mm 39.5
Foot: 245 mm Shoe: 255 mm 8.5  6.5  40 
Foot: 249 mm Shoe: 259 mm 40.5 
Foot: 253 mm Shoe: 263 mm 9.5  7.5  41.5 
Foot: 258 mm Shoe: 268 mm 10  42 
Foot: 263 mm Shoe: 272 mm 10.5  8.5  42.5 
Foot: 267 mm Shoe: 276 mm 11  43.5 

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 three-quarter length fulcrum.

Karhu United Kingdom
Karhu United Kingdom

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 United Kingdom
Karhu United Kingdom

FUSION

Karhu United Kingdom

Guidance

Cushion

Propulsion

IKONI

KARHU Ikoni 3.0 running shoe

Guidance

Cushion

Propulsion

MESTARI RUN

Karhu United Kingdom

Guidance

Cushion

Propulsion

Customer Reviews

Based on 44 reviews
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R
Ralph Schmidt
Ich liebe Karhu Laufschuhe!

Ich trage schon seit über 15 Jahren Karhu Laufschuhe. Immer wieder kaufe ich auch von den Mitbewerbern, dennoch komme ich stets zu Karhu zurück. Preis-/Leistungsverhältnis sind in Ordnung, obwohl die Preise mittlerweile stark gestiegen sind.

R
Ralph Schmidt
Ich liebe Karhu Laufschuhe!

Ich trage schon seit über 15 Jahren Karhu Laufschuhe. Immer wieder kaufe ich auch von den Mitbewerbern, dennoch komme ich stets zu Karhu zurück. Preis-/Leistungsverhältnis sind in Ordnung, obwohl die Preise mittlerweile stark gestiegen sind.

R
Ralph Schmidt
Ich liebe Karhu Laufschuhe!

Ich trage schon seit über 15 Jahren Karhu Laufschuhe. Immer wieder kaufe ich auch von den Mitbewerbern, dennoch komme ich stets zu Karhu zurück. Preis-/Leistungsverhältnis sind in Ordnung, obwohl die Preise mittlerweile stark gestiegen sind.

G
Geert-Jan Thijssen
Great shoes! In heaven with “ SaySky” Karhu’s

Already 14 years sucessfull in the Walk of the World, the Nijmegen 4days Marches, thanks to my Karhu’s!!

G
Geert-Jan Thijssen
Great shoes! In heaven with “ SaySky” Karhu’s

Already 14 years sucessfull in the Walk of the World, the Nijmegen 4days Marches, thanks to my Karhu’s!!