With the Flex Runner 4, we always want to run. This slipper-like flexible shoe is very easy to put...With the Flex Runner 4, we always want to run. This slipper-like flexible shoe is very easy to put on. The stretch straps provide a perfect fit. And the flexible grooves on the outsole allow the foot to move naturally. Ideal for finding your rhythm.
With the Flex Runner 4, we always want to run. This slipper-like flexible shoe is very easy to put on. The stretch straps provide a perfect fit. And the flexible grooves on the outsole allow the foot to move naturally. Ideal for finding your rhythm.