12M: height 6cm,suitable for 0-2years old;
24M: height 7cm,suitable for 2-4years old.
Manual measurement, 1-2cm error is within the normal range.
Due to different lighting and display, there is a slight color difference, hope you don't mind.
Sometimes, length of two socks is not exactly the same, it is not a quality problem. As socks are very flexible, you can also wear it well.