Robeez Soft Soles Classic Boot Slip On (Infant/Toddler) 100% Suede Rubber sole Soft and flexible Endorsed by the American Podiatric Medical Association 0-6 Mo = Size 1-2M, 6-12 Mo = 3-4 M, 12-18 Mo = 5-6 M, 18-24 Mo = 7-8 M, 2-3 Yr = 9-10 M, 3-4 Yr = 11-12 M