The Nike Free 5.0 Flash resides exactly at the halfway point of Nike’s 10-point scale between barefoot mechanics and maximal structure, so the model is intended as an ideal middle ground between natural running and traditional running shoe construction. The 2014 versions underwent a number of revisions, most significantly with the addition of Nike’s highly flexible hexagonal midsole, which provides outstanding flexibility in all directions. Now the Flash version of the Free 5.0 adds some weather resistance for poor weather, and an extensive amount of reflective material throughout the upper for increased safety in the dark.

Comfort
The weather resistant upper runs slightly warmer than the lightweight mesh on the regular Free 5.0 and keeps your toes comfortable in cool, wet conditions.

Fit
Comfortably snug through the rearfoot and midfoot, but the forefoot and toe box are on the low side, which could be a challenge for larger volume feet or thick sock users.

Responsiveness
Great rebound and responsiveness during standard road running.

Stability
Outsole rubber is extremely limited, located only at the lateral heel and medial big toe. There’s minimal capacity for venturing off-road, so you’ll lose some grip and responsiveness going from pavement to dirt.

Speed
With moderate cushioning, a secure fit, and a fairly lightweight 8.3oz, it’s easy to run fast in the 5.0 Flash. It’s rare that a winterized version doesn’t compromise weight or speed – but that’s exactly what Nike has done with the Free 5.0 Flash.