To measure, use a parka that you already own and that fits you well, close the buttons or zipper, lay it flat on a flat surface (large table or floor) and proceed as follows
A: Measure the Shoulder width from sleeve inset seam to sleeve inset seam.
B: Measure half the Chest measurement from lower axillary point to lower axillary point, lying flat. Take the value multiplied by 2 for the entire chest circumference.
C:Measure the sleeve length from the highest point of the sleeve (usually at the shoulder seam) to the sleeve hem.
D: Measure the back length in the middle of the back from the base of the collar (without collar) to the lower edge of the hem.
