Nike Polos Size Chart

 MEN'S XS SM MED LG XL 2XL 3XL 4XL
Chest  18.5 20 21.5 23.25 25.25 27 29 31
Body Length 28.75 29 29.5 30.25 31.5 32.5 33.75 35
Sleeve Length 18.5 19 19.5 20 20.75 21.5 22 22.75

 LADIES' SM MED LG XL 2XL
Chest  17.5 18.75 20 22 24
Body Length 25 25.5 26.25 27 28
Sleeve Length  14.5 15 15.5 16.25 16.75