Elastic cuffs for a perfect fit. These baby socks sneakers are made for a snug fit. The mesh is also breathable, so it can be used in a variety of colors, and the designs are also cute and different colors. (Size Information) 18-19 (11 cm)) = 10-11 cm 20-21 [12 cm] = 11-12 cm 22-23 [13 cm] = 12-13 cm 24 cm