What an incredibly sensible and practical idea!!! It just makes sense to have cozy socks yet the anti-slip properties of a shoe -hence, the sockshoe was created by Babytrack in the Netherlands. These hip, funky and comfortable socks are made out of high quality cotton with thermoplastic soles. These sockshoes are easy to wash, sturdy, and ideal for taking anywhere - very multifunctional!! 6 fantastic styles to choose from and available in 4 different sizes. Size 3/4 (12 months), size 4/5 (12 - 18 months), size 6/7 (18 months - 2.5 years), size 8/9 (2.5 years - 4 years).