Price: $

Delivering a smooth transition and designed to improve stride efficiency, the Karhu Fluid3 Trainer Fulcrum features moderate cushioning and a firm ride.



The Karhu Fluid3 Trainer Fulcrum is a neutral shoe geared for running efficiency. This everyday trainer utilizes Symmetrical Fulcrum technology and a tuned geometry to promote a smooth, efficient ride.

Model Number:

Weight:  9.6 oz (size 9)

Stack Height: Heel (21mm), Forefoot (13mm)  

Widths Available: D=Medium

How It Fits (based on width D)

  • Sizing: Fits large, purchase full size smaller than standard running shoe size
  • Heel: Medium to wide
  • Mid-foot: Medium
  • Forefoot: Medium to narrow
  • Toe-Box height: Medium to high
  • Arch Structure: Medium to high
  • Shoe Shape: Semi- Curved


  • CMEVA is compression molded EVA which is an industry standard midsole material designed to offer durable cushioning.
  • Fulcrum is a high durometer EVA wedge located from the heel to the midfoot. It is engineered to promote an efficient heel to toe transition by converting heel strike energy into forward momentum.


  • Wearable EVA Outsole with Compression Molded Rubber in key areas for optimal durability and shock absorption.


  • Open Mesh is utilized throughout the entire upper and provides breathability.
  • Welded Overlays around the midfoot support the contours of the foot for a snug and supportive fit.
  • Reflective Details increase visibility in low-light conditions.
  • Traditional Sockliner provides contoured support and cushioning.
  • Strobel Last with the upper stitched to a full length EVA board for a comfortable underfoot feel.

Footwear Performance Characteristics

Pronation Control: What's This?

  • Neutral
    • Min
    • Mod
  • Support
    • Min
    • Mod
    • Max
  • Motion Control
    • Mod
    • Max

Heel-Toe Offset (mm): What's This?

  • 0
  • 1-2
  • 3-4
  • 5-6
  • 7-8
  • 9-10
  • 11+

Stack Height:

  • Barefoot
  • Minimal
  • Low
  • Medium
  • High
  • Maximal


  • Road
  • Road-Trail
  • Hard Trail
  • Varied Trail
  • Soft Trail

Shoe Type:

  • Premium
  • Standard
  • Performance
  • Racing

Customer Reviews

Comments: Nice shoe with many good features. FIT: confusing because the text says get 1 full size smaller, but ShoeFitr showed a normal fit for me. I got 1/2 size smaller and it was just right. I usually wear a 10-1/2, but in a few shoes will wear an 11. A 10-1/2 would likely have been wearable, but not optimal. FEEL & RUNNING: it's a firm shoe, and very comfortable. I especially like the low heel tab (no Achilles tendonosis here!) and overall fit width and comfort was excellent. Can't say anything about the reduced vertical oscillations that the shoe claims, but I found an easy rhythm with quick cadence. I would say the shoe promotes, or at least does not inhibit, a forefoot strike running style. Shoe will be good for road and mixed surface running. Not as cushioned as a shoe like Saucony Triumph, so I'll use these for runs up to an hour on roads and longer runs on grass/trails. I would recommend these and will buy them again.
From: Basil, Kapaa, HI, USA. August 31st 2014