Fortitude Size Charts (Women's Sports Bra)
Find Your Bra Size
Getting the right size bra is crucial to lock in all the benefits. Grab a tape measure and an unlined bra to see how you measure up in Nike Bras. If you don't have a tape measure, string and a ruler work too.
Use the charts below to convert your usual bra size into Nike Sports Bra sizes.
| Size | CHEST (inches) | UNDERBUST (inches) |
| XS | 33 ⅛ | 28 ¾ |
| S | 34 ⅝ | 29 ½ |
| M | 36 ¼ | 30 ¼ |
| L | 39 ⅜ | 31 ⅞ |
| XL | 42 ½ | 33 ½ |
| 2XL | 45 ⅝ | 35 |
Three Tips for Finding the Right Fit
Because when it fits, it's a beautiful thing.