How Do I Find My Chest Binder Size?
1. Locate a fabric or paper tape measure
This type of measuring tape is easy to wrap around your chest. Alternatively - If you don't have one, you can instead use a piece of string, then measure it with a ruler.
2. Ask a trusted friend to help
Taking an accurate chest measurement on your own can be a bit challenging, so if you can, try to enlist the help of a trusted friend. If that's not possible, take extra precautions to ensure the tape measure remains secure in the back during the measurement.
3. Measuring your chest
To achieve the most accurate measurement of your bust/chest size, wrap a tape measure around the fullest part of your chest and measure the circumference over the fullest part of your chest, as shown below: