08/21/2026
From George Gagnon:
“I have used the FlexSpring™ insert for a while now, and it has made a real difference in how my feet feel.
Some background: I had foot surgery in 2021, and since then I have needed a professionally made orthotic to get the support my foot requires. That is expensive and it takes time to have made. What I have found is that I can now take an ordinary off-the-shelf insert, pair it with Jeff’s Flex Spring, and get everything I was getting from a custom orthotic. That has changed how I approach footwear.
The insert itself is very thin. It is made of continuous fiberglass fibers, so it is light and strong at the same time, and it has real spring to it. You put it under a standard insert and you barely know it is there, but the support is there.
I have known Jeff Milliman for over twenty-five years. He was an excellent runner, he understands the biomechanics of running as well as anyone I have met, and he has been in the running shoe and gear business for over forty years. He and Gordon Brown knew what they were doing when they designed this.”
FlexSpring™ inserts are available exclusively at Greenville Running Company…
Located at 765 Haywood Road….next to
Men’s Wearhouse & Firehouse Subs….
Not in the Mall…..
