Sleeve : Measured from the shoulder seam down to the bottom of the sleeve.
Chest : Spanning from the bottom of one armhole across the chest to the bottom of the opposite armhole.
Waist : Measured from one side of the shirt across to the other, at the natural waist or smallest width.
Shoulder Width : Extending from the seam of one shoulder across to the seam of the other shoulder.
Back Length : Measured from the collar down to the bottom of the shirt.