The GEL-550TR (D WIDE) is the next evolution of this long-standing training series. This new model brings a faster and lighter look and feel to the shoe. DUOMAX™ provides support for those who have a versatile training regime and engage in side-to-side lateral movement, this model still provides inherent stability characteristics combined with forefoot flexibility and shape to bring a new level of responsiveness. Forefoot and rearfoot GEL™ allows excellent shock absorption and the upper has been engineered to deliver supreme comfort and fit. Wide Fit (D).