length of clothing; garment length
Refers to the vertical length of a garment, such as a kimono, coat, or dress, measured from shoulder to hem.
This kimono is too short in length.
コートの身丈を直してもらった。
I had the length of the coat altered.
Compound of 身 (mi, 'body') and 丈 (take, 'length'). The reading みたけ is a standard kun'yomi combination.