GoLite Men's Flash Lite Trail Runner 100% Synthetic Rubber sole BareTech technology provides true 'barefoot' construction where the heel and ball of foot are on the same plane. Enjoy the benefits of barefoot running or hiking with the protection of high performance footwear. BareTech provides a true natural stance with optimum balance and stability on the trail Asymmetrical lace design follows the natural contour of the human foot A supportive and protective TPE cage surrounds your foot in this trail runner. The design mimics the tendons and ligaments of the human foot Stabilizing heel cradle locks the heel in place, minimizing movement and friction