Please kindly keep in mind that Rothco's M-51 Fishtail Parkas are made to military specifications. Designed to be worn over heavy military uniforms (i.e. coat, sweater etc.), M-51 Fishtail Parkas are considerably oversized in comparison with their listed measurements.<br /><br />- For wearing in extremely cold conditions over a coat; order ONE size DOWN.<br />- For wearing in over a shirt or sweater only; order TWO sizes DOWN.<br /><br />Again, these M-51 Fishtail Parkas are NOT true to size and made to military specifications—after purchasing 3 separate M-51 Fishtail Parkas to get my actual size, I would say the sizing is really as follows according to retail sizing:<br /><br />Listed - Actual<br />XS &#62; M<br />S &#62; L<br />M &#62; XL<br />L &#62; XXL<br />XL &#62; XXXL<br />XXL &#62; XXXXL<br /><br />For instance, I'm a LARGE but a SMALL in this item; hope this helps.

This is the cold weather outerwear that go's over the rothco vintage N-3B OD Parka.<br />It is just the outer exstream shell.<br />It buttons around the hood only.<br />It works very well with my vintage parka.<br />It is thin, but it keeps the wind out.<br />What ever size parka you have, buy the same size shell . I did and it fit perfectly.