K. INSIDE LEG LENGTH - The distance between the crotch and the floor, measured in a straight line when the person standing erect with feet slightly apart.

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INSIDE LEG LENGTH
The distance between the crotch and the soles of the feet, measured in a straight line when the person standing erect with the feet slightly apart.

Make sure that the measure tape is in your crotch as high up as possible. Measure shall be taken without shoes.