Newton Running Womens Distance S III Mesh Rubber sole Shaft measures approximately Low-Top" from arch Semi-flat, lightweight laces with heel lace lock 360 degree reflectivity adds a boost in visibility in low-lighting conditions Plush tongue and collar for added comfort Mid-foot and Heel Action/Reaction Technology: A highly responsive, trampoline-like and engaging midsole cushioning that protects and loses less energy with each step