Nike Jacket Size Chart

Size	Body Length (Back)	Chest Width (1″ Below Armhole)	Sleeve Length (Center‑Back)
XS	25⅝″	18⅞″	32¼″
S	26″	20½″	32⅝″
M	26⅜″	22″	33¼″
L	27⅛″	23⅝″	33½″
XL	27⅞″	25⅝″	34⅛″
2XL	28¾″	27½″	34⅛″
3XL	29½″	29½″	35¼″
4XL	30¼″	31½″	35¾″