PETAL
Two symmetrical thin bra inserts, with the left side listening closely to your body.
How Pre-ordering Petal Works
- Pay only $49 today. Secure your Petal with a refundable pre-order deposit.
- Receive a free Petal app membership. No subscription needed—no ongoing costs or hidden fees.
- Pay the remainder when Petal ships. The remaining balance will only be charged when your Petal ships.
- Free shipping is included.
Limited quantities of Petal will begin shipping on May 1, 2026 in honor of Women's Health Month. This shipment is currently over 70% reserved.
Fit & Care
Sizing
Petal is one size. For the best accuracy, the sensors require snug contact with your body, so we recommend wearing Petal with a closer-fitting bra.
Cleaning instructions
Petal can be cleaned with any antibacterial wipe safe for use on the skin.
Materials
Bio-impedance sensors
Petal uses advanced, medical-grade bio-impedance sensors. This low-power technology safely measures your body's unique electrical resistance to gather data, making the measurements safe and non-intrusive.
Note: Petal’s sensors are only located on the left insert, as it’s closest to the heart. The right comfortable insert is included for balance and symmetry.
Fabric
Petal is crafted with premium, biocompatible materials, featuring soft European-knit fabrics and a polyurethane-coated interior that meets OEKO-TEX Standard 100 – a globally recognized certification for textiles tested for harmful substances and suitable even for baby products.
Specifications
Dimensions
12cm x 13.5cm x 6mm thick
Battery life
Petal offers up to 18 days of use on a single charge and recharges completely in under one hour via the included USB cord.
App compatibility
The Petal App is compatible with iOS and Android.
Connectivity
Bluetooth® Low Energy (LE) technology. No WiFi, no cellular radio.
Privacy
Petal takes your privacy seriously. And when it comes to your data, you’re in charge. Learn more about data protections in our Privacy Policy.
FAQs
See our frequently asked questions here.
HEART
- Monitor your resting heart rate (RHR) as an indicator of your fitness level.
- Measure and record patterns in heart rate variability (HRV) through cumulative measurements throughout the day to monitor and improve your overall health and energy levels.
- See your beats per minute (BPM) for feedback about your workout intensity.
- Foster an active lifestyle by staying up-to-date on your trends in movement and sedentary time.
- Share trends in cardiovascular health and physiological adaptability to guide conversations with your doctor.
MIND
- Use breath rate to know how your body responds to daily stress, and optimize breathing exercises for stress management.
- Increase awareness of your stress responses, cultivate mindfulness, and manage your emotional wellbeing by monitoring RHR, HRV, breathing rate and other integrated wellness indicators.
- Display trends and peak values of RHR and HRV to help understand your body’s response to exercise and daily life.
BODY
- Understand your midsection fat percentage and your visceral fat index to support early prevention and your fitness goals.
- Track and measure trends in midsection fat and visceral fat index alongside other integrated wellness indicators to mitigate metabolic health risks and inform sustainable, data-driven lifestyle changes.
- Stay safe with crash and fall detection and alert.
CYCLE
- Track trends in menstrual cycle length and phases to proactively manage cyclical discomforts, optimize daily wellness, and plan with your hormonal shifts in mind.
- Understand changes in breast tissue and water content throughout your cycle to manage discomforts like swelling and tenderness.
- Gain an informed picture of your cycle to have conversations with your doctor about reproductive health.
- Log and validate symptoms of perimenopause and menopause to proactively address physiological and mental changes.
SAFETY WITHOUT COMPROMISE
Petal is guided by an unwavering commitment to the highest medical standards. Led by our Chief Medical Officer, Dr. Prionas—a breast radiation oncologist at one of the most prestigious medical institutions in the US—we ensure that clinical safety and medical accuracy are at the heart of every feature.
MEDICAL-GRADE SENSORS
Petal uses advanced, medical-grade bio-impedance sensors—the same safe, non-intrusive technology trusted by medical professionals in clinical devices and BMI scales, but operating at significantly lower power.
Premium Materials
Petal is crafted with premium, biocompatible materials, featuring soft European-knit fabrics and a polyurethane-coated interior that meets OEKO-TEX Standard 100 – a globally recognized certification ensuring they are tested for harmful substances and designed for safe, comfortable contact with your skin.
safe communication
We use Bluetooth® Low Energy (LE) technology, one of the safest wireless technologies available, for seamless communication with the Petal app. It operates at an incredibly low power level—significantly lower than typical smartwatches and fitness trackers. Functioning entirely without Wi-Fi or cellular radios, it operates free of ionizing radiation.
Petal is a wellness device and does not replace emergency medical care.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Petal is under license. Other trademarks and trade names are those of their respective owners.