Socks length: 15CM suitable for 1-2 ages Socks length: 18CM suitable for 3-8ages Category: boat socks Material: 75% cotton + 25% dacron(polyester) Add some polyester material is in order to better printing, the color is more bright-coloured, not easy fade, the sock is not easy to deformation Process: 3D printing socks Thickness :medium Suitable for season :spring, summer, autumn, winter