The GEL-550TR (WIDE) is a versatile training and walking shoe perfect for those who engage in side-to-side (lateral) movements). DUOMAX? provides support for those who have a versatile training regime and engage in side-to-side lateral movements. 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.