The women's KARHU Fusion 4.0 is crafted to take your running experience to the next level, providing effortless propulsion with every step.
This shoe is a perfect choice for runners in search of t neutral running shoes that also deliver the speed and performance of fast running shoes. 

The redesigned Fusion 4.0 offers a plush, responsive ride that’s ideal for neutral runners. With new features and enhancements, it excels at creating a smooth heel-to-toe transition, ensuring a dynamic and responsive feel underfoot, regardless of your pace. The update incorporates soft IdealKnit mesh for enhanced breathability and comfort, while the nitrogen-injected AeroFoam midsole provides increased rebound. Additionally, the deflection channel at the base of the midsole improves impact absorption, delivering an even more cushioned running experience.

The KARHU Fusion 4.0 is an all-in-one option for runners who value comfort, performance, and responsiveness. At KARHU, we recognize that every runner’s feet are different, and this understanding shaped the latest updates to the Fusion 4.0.

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: 6m

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 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.