KARHU Fusion 3.5

Men's Running Shoes View Women's
original price $150 sale/discounted price $112.50
Star Rating is 5 / 5
23 Verified Reviews
Raspberry / Strawberry #1127896-RSRW-ABIW
Happy Fit Guarantee
Fleet Feet Reviewed
Read our review of the KARHU Fusion 3.5


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.

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.

Read More in Our Karhu Fusion 3.5 Review

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Star Rating is 5 / 5
Based on 23 Verified Reviews
Star Rating is 5 / 5

KARHU for the win!

Garrett 5 months ago Verified Purchase

Very comfortable shoes! Very little break in period for me.

Star Rating is 5 / 5

Best Running Shoes ever!

CDodd 6 months ago Verified Purchase

Awesome Shoes! Been a runner for over 50 years. Best shoes for running I have ever had! This is the 3rd pair I've owned!

Star Rating is 5 / 5

Karhu Shoe Review

Alex 7 months ago Verified Purchase

The shoes are fantastic. Very comfortable light weight and good looking.

Star Rating is 5 / 5

Amazing Shoe

Josh 7 months ago Verified Purchase

This is the only pair of shoes I’ve had that I can say is perfect. If you like a little more stability with good support and cushioning this is a great shoe. I have particularly flat and narrow feet and these are fantastic. I’ve only had them for a few weeks but can say the material feels very durable. I’m sure I will be buying a second pair. My only complaint is that I wish there were some simpler color options (all white all black).

Star Rating is 5 / 5

Karhu Fusion

tjasp 7 months ago Verified Purchase

My third pair. A great pair of shoes. Recommend highly.

Star Rating is 5 / 5


Anonymous 7 months ago Verified Purchase

This is my third pair of these shoes and they're my current favorite.

Star Rating is 5 / 5

Tried Them and Now Won't Give Them Up

NickDangerME 7 months ago Verified Purchase

Tried these on the recommendation of the Portland ME Fleet Feet sales clerk. I've run a dozen brands over the years but these are the best fit I've found for my high-arched feet which are getting a bit sore now that I'm 65. I'm on my second pair now. Well made and extremely comfortable.

Star Rating is 4 / 5

Wish there was a more business casual styling

Rob 8 months ago Verified Purchase

They are great. I have the previous version of the shoe that is all black including the piping. I am not a fan of the silver piping on the new style. I like to wear these for my work which requires me to be on my feet all day but also be business casual. The all black was easy to hide but these with the silver piping really stand out too much.

Star Rating is 5 / 5

Excellent Shoe!

Jay 1 year ago Verified Purchase

As someone with wide feet it's become quite the challenge to find a shoe that's wide enough in all the right places and yet comfortable enough to wear all day. Whether walking jogging or just standing around the Karhu Fusion 3.5 provides plenty of cushion and a perfect comfortable fit. Karhu has quickly become my 'go-to' shoe.