My son wears a size 3 in Stride Rite shoes (youth size 3). Teva size 3 was extremely small/tight on his feet, and his feet spilled out of the shoe in all directions. Size 4 was a better fit, though still on the smaller size. Great construction and padding, just wish Teva would get their sizing more consistent with other brands (I have to size up one full size for my Tevas as well).