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What does the length behind the strap skirt mean?

Length from back panel to hem. The back length refers to the length from the back piece to the hem, which is different from the length of clothes. It is inaccurate to measure the length of clothes. The back middle length refers to the length of the clothes measured in the back middle, excluding the collar. Strap skirt, the name of modern skirt, a kind of dress. There are various styles of skirts under the clothes with straps on them (the straps can be wide or narrow, and there are many styles). It is convenient and practical to hang the skirt with a strap when wearing it.