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.
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.
Zum Vorgänger deutlich verbesserte Zunge/ dicker, bequemer. Schuh fühlt sich sofort gut an. Leider ist das Schnürband für eine Marathonschnürung zu kurz. Mind. 3 cm länger notwendig!
C
Coen (The Netherlands)
How does it fit?:
Too small
Too big
Excellent allround shoe
In use for endurance runs and moderate-level intervals. Serves more than fine for these purposes. It's a comfortable and reasonably fast shoe. Spacious for the toes while fitting snugly around the foot.
For races and fast intervals on the track, I use a different pair, but Karhu Fusion 4 is my go-to option for most km's!
Recommend to order 0.5 larger than your usual shoe size.
J
Juriaan Spek
There is a big difference with version 3.5.
I've been working with versions 2, 3, and 3.5, but version 4.5 feels really different. I'm not sure I can get used to it.
Zum Vorgänger deutlich verbesserte Zunge/ dicker, bequemer. Schuh fühlt sich sofort gut an. Leider ist das Schnürband für eine Marathonschnürung zu kurz. Mind. 3 cm länger notwendig!
C
Coen (The Netherlands)
How does it fit?:
Too small
Too big
Excellent allround shoe
In use for endurance runs and moderate-level intervals. Serves more than fine for these purposes. It's a comfortable and reasonably fast shoe. Spacious for the toes while fitting snugly around the foot.
For races and fast intervals on the track, I use a different pair, but Karhu Fusion 4 is my go-to option for most km's!
Recommend to order 0.5 larger than your usual shoe size.
J
Juriaan Spek
There is a big difference with version 3.5.
I've been working with versions 2, 3, and 3.5, but version 4.5 feels really different. I'm not sure I can get used to it.
