Always measure standing upright with your feet slightly apart, without clothes, and ensure the measuring tape is positioned correctly and horizontally/parallel to the floor. Ask a friend to help or check the position in a mirror. Ensure to measure accurately before ordering to prevent exchanges for which you will be responsible.
When sizing a sports bra, it is best to base the size on your under-breast / under-pecs measurement, as 80% of support should come from the band sitting in this area. If you are in between sizes, we recommend you select the bigger size if your size is XS-M/L and the smaller size if your size is M/L and up.