KARHU Fusion 3.5

Women's Running Shoes View Men's
original price $150 sale/discounted price $112.50
Star Rating is 4.8 / 5
32 Verified Reviews
Raspberry / Strawberry #1127896-RSRW-ABIW
Happy Fit Guarantee


Be ready for an uptempo run in the KARHU Fusion 3.5.

This swift and nimble shoe has been streamlined with a new upper and engineered for faster turnover. The Fusion features Karhu’s 3/4 length Fulcrum in the midsole that provides the quickest roll out of the Karhu shoe lineup. It concentrates the cushioning toward the heel and midfoot, creating a responsive rocker shape that stabilizes each step and propels you forward.

The plush and propulsive ride is also thanks to Karhu’s AeroFoam midsole, which is lightweight and more temperature resistant than the traditional EVA midsole foam. It provides super-soft landings, while an added propulsion unit energizes take-offs.

The new upper features a breathable engineered mesh that is designed with an intricate venting pattern and reinforced with glue print toe accents and a sleek heel counter. This new upper looks more stylish and feels more comfortable than ever.

The women’s version of the Fusion 3.5 features HeraFit, which is based on measurements from Fleet Feet’s 3D foot scans. From these scans, Karhu discovered that the instep and forefoot of men’s and women’s feet measured significantly differently. So Karhu adjusted the volume and circumference of the instep and forefoot to better fit women’s feet.

With the KARHU Fusion 3.5, you will be rolling through your runs.

Tech Specs

KARHU Fusion 3.5


6 mm


8.8 oz (W), 10.5 oz (M)




Everyday Training


Road, Track, Treadmill

What’s New

The KARHU Fusion 3.5 features a new upper. The engineered mesh has an intricate venting pattern with a reinforced toe and updated heel counter. People who love the Fusion will enjoy the new version for its comfort and consistent fit.

Who It’s Best For

The KARHU Fusion is a great lightweight trainer for runners and walkers alike. This shoe can handle long miles but can also pick up the pace.

Why You’ll Love It

You will love how the Fulcrum propels you forward in the KARHU Fusion 3.5. It is lightweight, breathable and more comfortable than ever before, but durable enough to handle the miles.

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Star Rating is 4.8 / 5
Based on 32 Verified Reviews
Star Rating is 5 / 5

Thank you!

Pjthierolf 3 months ago Verified Purchase

These shoes help my feet !! No blisters! Just the right fit to walk 11000 plus steps per day. Thank you!

Star Rating is 5 / 5

Make walking an airy delight

Margo25 4 months ago Verified Purchase

I’d never heard if this brand but the narrow heel was a keeper. The shoe is very lightweight has a great cushion inside and makes walking a breeze! Great variety of colors and I just bought a second pair. That’s how happy I am with Karhu sneakers.

Star Rating is 5 / 5


Mom T 5 months ago Verified Purchase

Love the fit and the sweet colors offered!! I am not a runner but they walk comfortably. At 68 they are the perfect weight and cushion!

Star Rating is 5 / 5

FeelsLike You’re Walking On Clouds

Tpesso 5 months ago Verified Purchase

Love my new sneakers. Karhu makes the best fitting sneakers. Feels like I’m walking on clouds!

Star Rating is 5 / 5

Best Shoes for my Feet

Pam R 6 months ago Verified Purchase

Thanks to a Fleet Feet employee I tried on a brand I had never heard of. I have worn Karhu’s ever since. Due to wide flat feet I size up and wear HiVo. I love the rocker in the sole that helps propel me forward. I have tried other brands but they just don’t compare. Just wish they had more variety in colors.

Star Rating is 5 / 5

So comfortable

Christina 10 months ago Verified Purchase

I have been wearing KARHU Fusion for 2 years now. They are so cushioned and stable and supportive. I walk 4 miles daily. My back and hip pain are almost nonexistent now. I buy 2 pair a year and have my husband daughter and several friends wearing them now.

Star Rating is 5 / 5

Best workout and cardio shoe I have ever worn!

BlueSkye 10 months ago Verified Purchase

I love this shoe!!! I have a small foot with a very high arch wide forefoot and narrow heels. The HiVo version of this shoe fits me perfectly. My feet supinate which causes wear on the outer side of shoes. This shoe helps with that and is highly cushioned. This is my new favorite shoe! I want to buy another pair after wearing thinness for two days but can’t find my size in the HiVo version. I will keep looking!

Star Rating is 5 / 5


Mary U 1 year ago Verified Purchase

I love them so much I bought 3 pairs in different colors

Star Rating is 5 / 5

Incredibly stable

lesa 1 year ago Verified Purchase

These Karhu fusion 3.5 are incredibly stable. I really thought that the cushier the better but no. My low back and hips feel great after a long walk on the treadmill. I am not a runner but I live with RA; preventing injury is essential and these help a lot. Highly recommended.

All Reviews