To make sure you order the right size, you can measure your neck. If you are 38cm/15″ or less, you can order size I. If you measure 38cm/15″ or more, you can order size II. Necks are actually very much alike, no matter your regular size, weight or waist size. However, if you’re more comfortable with a loose fit, you can also order size II. The measurements of this item are as follows: from shoulder to shoulder 36 cm. From collar to shoulder 12 cm. The front length is 26 cm and back length is 32 cm. Please note that this item can be worn ruffled up with a higher neckline or unfolded. Choose your size accordingly.