Find your size!
Flatstrap sizing is based on chest apex measurement and underbust rib circumference. Take your measurement as shown below and refer to the sizing chart to find your size.
To ensure a safe and comfortable fit, please inhale deeply to expand your rib cage as you take these measurements. Measurements are shown here with a measuring tape. Measurements could also be taken with a string and a ruler.
Apex Chest:

If the bulk of your breast tissue hangs below your chest, then you will measure lower than what is shown in the picture to capture that information.
For best flattening results, let the tape press lightly into your chest tissue as shown.
The tape or string will fall lower on your back than on your chest. This is normal.
Underbust Rib Circumference:

If the bulk of your breast tissue hangs below your chest, then you will measure lower than what is shown in the picture to capture that information.
Using these two measurements, refer to this chart
and find your size.

If you are confused about any of this, you can reach out to info@euphorm.co for support. It may be possible to schedule a virtual or in-person fitting.
As we ramp up production, euphorm will be able to manufacture more variations in our sizing to meet our goal of being a size-inclusive brand. For the initial production run, we have 5 adjustable sizes that cover the S to 3xL size range and B-E cup range. In the future, we hope to develop sizes that also vary in their horizontal coverage to provide more or less chest-tucking capacity.
Here’s how the FLATstrap holds up at its limits.
Size XL FLATstrap fit on a 40 G model:


Size SM FLATstrap fit on dense, protruding 35B model:


This model’s tissue is not held very stably, and they would be at greater risk of popping out 😮
Contraindications:
The Flatstrap may not be suitable for individuals with extremely firm breast tissue, folks who wear large nipple piercings, or people with sensitivity to synthetic materials.
Please see our safety guidelines.
