The Hypoknit upper is lighter and more flexible

A MaxTrac™ outsole gives you the sticky underfoot grip you need to take the trail less traveled with confidence

It helps keep you cool at every step—or any part of your day—with ventilation that was designed using data from runners

USB rechargeable

10% elastane

Men's Altra Experience Flow 3 US Size:8.5 The Hypoknit upper is lighterFor everyday runners looking for a lightweight, performance focused shoe. For runners engaging in longer training runs wanting to ward off tired and achy feet. For social runners attending community run clubs with their fingers on the latest trends. For smooth. For lightweight. The Altra Experience Flow 3 is all about helping runners stack volume. Altra have redesigned the upper and collar on the Experience Flow 3, delivering a lighter, more airy fit