Saucony's most minimal and lightweight shoe ever, the Hattori is like an extension of your foot. Unlike other minimalist shoes, the Hattori's mitten-like toe box gives your toes room to naturally arch, grip and push off. To further leverage natural toe movement, the sole features a visible flex groove in back of the toes and in front of the metatarsals. The sculpted foam of the sole also includes strategically placed impact cushioning and delivers a slight piston effect without ever compromising natural motion. Weight: 4.4 ounces.