Our most minimal and lightweight shoe ever, the Saucony Hattori is literally an extension of your foot. Unlike other very minimal 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 Saucony Hattori 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: 3.8 oz.