To ensure the most comfortable fit for an accurate reading, QardioCore should be worn underneath a wire-free or sports bra. This guarantees your QardioCore will stay comfortably in place.
If necessary, QardioCore can also be worn under an underwire bra. We recommend positioning QardioCore underneath the bra band so the band/underwire sits on top of the device. If you prefer, you can try moving QardioCore lower down, positioning it just below your bra.