Use these charts to help determine which jersey size will best fit you.
Nike Men's NFL Jerseys
| Game/Limited | |||||||
| Size | S | M | L | XL | XXL | 3XL | 4XL | 
| Chest (Nike) | 41 3/4 | 44 7/8 | 48 | 52 | 56 | 60 | 63 3/4 | 
| Chest (Reebok) | 42 | 46 | 50 | 54 | 58 | 62 | 66 | 
| Back Length (Nike) | 30 | 30 1/4 | 31 | 31 3/4 | 32 5/8 | 33 1/2 | 34 1/4 | 
| Back Length (Reebok) | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 
| Elite | ||||||
| Numeric Size | 40 | 44 | 48 | 52 | 56 | 60 | 
| Size | M | L | XL | 2XL | 3XL | 4XL | 
| Chest (Nike) | 44 | 47 1/4 | 51 | 55 | 59 | 63 | 
| Chest (Reebok) | 48 | 50 | 52 | 54 | 58 | 62 | 
| Back Length (Nike) | 31 | 31 5/8 | 32 1/2 | 33 1/4 | 34 | 35 | 
| Back Length (Reebok) | 33 | 34 | 35 | 36 | 37 | 38 | 
Nike Women's NFL Jerseys
| Game/Limited | ||||||
| Jersey Size | XS | S | M | L | XL | 2X | 
| Chest (Nike) | 36 1/4 | 39 | 41 3/4 | 45 3/4 | 49 1/2 | 53 1/2 | 
| Chest (Reebok) | n/a | 37 1/2 | 39 1/2 | 42 1/2 | 45 1/2 | 49 1/2 | 
| Waist (Nike) | 31 7/8 | 34 5/8 | 37 3/8 | 40 7/8 | 44 1/4 | 47 3/4 | 
| Waist (Reebok) | n/a | 35 1/2 | 37 1/2 | 40 1/2 | 43 1/2 | 47 1/1 | 
| Hip (Nike) | 38 3/4 | 41 1/2 | 44 1/4 | 47 1/2 | 50 5/8 | 53 3/4 | 
| Hip (Reebok) | n/a | 39 | 41 | 44 | 47 | 51 | 
| Back Length (Nike) | 25 1/2 | 26 | 26 3/4 | 27 1/2 | 28 3/8 | 29 | 
| Back Length (Reebok) | n/a | 24 1/4 | 25 | 25 3/4 | 26 1/2 | 27 3/4 | 
| Youth 8/20 | ||||
| 
 | size 8 | size 10/12 | size 14/16 | size 18/20 | 
| 
 | S | M | L | XL | 
| Chest | 33 | 36 | 39 1/2 | 42 1/2 | 
| Waist | 33 | 36 | 39 1/2 | 42 1/2 | 
| Back Length | 23 | 25 | 27 | 29 | 
| Mitchell & Ness Men's NFL Throwback Authentic Jerseys | ||||||||
| Size | S | M | L | XL | 2XL | 3XL | 4XL | 5XL | 
| Jersey Size | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 
| Chest | 35-37 | 38-40 | 42-44 | 46-48 | 50-52 | 54-56 | 58-60 | 62-64 | 
| Body Length | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 



