Re-launched to the U.S. market in 2006, Karhu continues to adapt its Fulcrum technology. The Fluid 3 is the next iteration of Neutral shoes for Karhu, following on the success of the Trail, Road, and Race versions of the Flow. The Fluid 3’s upper is an open mesh with synthetic suede overlays and welded supports in key spots. – See more at: http://runningproductreviews.com/index.php/shoes/training/2014-spring-neutral/476-karhu-fluid-3-fulcrum-125#sthash.LP67R9dd.dpuf