The RECEPTOR® technology platform is the result of a sequence of innovations connected to heel strike, smooth transition, and striding comfort. RECEPTOR was innovated in 2001 in collaboration with a team of scientists studying the human walking motion. It was born from the understanding that every time you take one step, your foot takes three — this is to say that each step requires three distinct phases of your foot: push off, mid stance, and heel strike. ECCO RECEPTOR was designed to enhance each of these phases while providing anatomical support, with its unique "three-finger" propulsion plate, internal mid-foot shank, and dual flex grooves.