As a longtime wearer of the Nike Free TR series for all my gym (strength/cardio) workouts, I was dismayed when Nike discontinued that series. Finally, I begrudgingly bought a pair of Free Metcon 4s, which I was pleasantly surprised to find offered almost as much flexibility as the Free TRs, but with a bit more stability and support. The Free Metcon 5s are superior to their predecessor, with better arch support and increased cushioning throughout, especially around the ankle. I initially ordered them in my regular size, but found them to be snug and short, so I exchanged them for a half size up for a little extra room, especially with thicker socks. Overall, a great training shoe for all gym workouts and light running.