The GEL-CUMULUSÂ® 23 shoe helps you focus on the distance ahead as you move towards your personal best. Itâ€™s a high-mileage trainer thatâ€™s designed to make your stride smoother and your mood brighter. This version is also formed with a MONO-SOCKâ„¢ upper that gently hugs your foot in key support zones. Creating a softer feel underfoot, this shoe features an updated GELÂ® technology unit in the heel that allows you to experience cloud-like comfort. Meanwhile, the FLYTEFOAMÂ® cushioning keeps the shoe lightweight and propels your stride forward with a smooth transition.