Unique comfort and side of support; Responsive, soft, supportive, performance-focused design; Do-it-all stability shoe with elevated features; GuideRail technology provides gentle medial guidance for natural foot placement; Classic Altra EGO MAX midsole foam delivering light and luxurious performance; Updated heel shape for improved fit; Elevated tongue details for added comfort; Breathable mesh upper for improved fit and soft step-in; Altra Fit provides plenty of room for toe freedom; Secure midfoot support