Finally — a health wearable built for a woman's body
Petal is a smart bra insert bra that empowers women with accurate health data to support their intuition.
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Women’s health has long been underserved due to male-centric clinical research and models, putting women at a higher risk of health problems.
Petal changes that with a discreet bra insert designed specifically for women. Your history, your rhythms, your body, and your baseline.
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Safe, comfortable, and nearly invisible
Petal's safe sensors continuously and quietly monitor subtle shifts in your cardiovascular health, breast tissue, and trends related to hormones and metabolism— because you deserve to feel informed, not misunderstood.
Your intuition has always been valid. With Petal, you have the data to support it.
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Built for her biology
Heart
Petal stays close to the heart, so it’s more effectively tuned in to heart health indicators and vital metrics than other wearables. Monitor your resting heart rate and heart rate variability, beats per minute, and more.
Your cycle is one of the best ways to learn about your body. With Petal, you can manage symptoms linked to hormonal changes by observing patterns in breast tissue and water content throughout your cycle.
Body
BMI is an outdated indicator of health in women. Petal measures things like midsection fat percentage and visceral fat index — both early indicators for disease — and provides personalized recommendations.
Mind
Your nervous system links your mind and body, so your thoughts and emotions affect function like heart rate, digestion, and immune response. Petal provides the insights to support a healthier mind-body connection.
Your ally throughout life's changes
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"I’m really into wearable tech, so I was excited to try these inserts. I expected them to be bulky, but they’re surprisingly thin, conform to the body, and are comfortable. I barely felt them."
LEAH, 37
"By using Petal, I can make more informed choices about my body, recognize patterns I might have missed, and feel more confident and proactive in managing my health."
CAMILLA, 30
"Instead of treating these major women's health concerns separately, Petal gives me a single, holistic view. It's truly a smart, necessary step forward for women's wellness!"
GRACE, 43
What makes Petal different?
The first wearable built for female physiology, using breast-based bio-markers for superior health data.
Discreet & Comfortable: Invisible under clothing and designed for daily wear.
Superior Accuracy: Measures at the source for more precise data than wrist or finger trackers.
Deep Bio-Insights: Uses Bio-Impedance Analysis (BIA) technology to track heart health, menstrual cycles, and body composition.
Ultra-Safe Tech: Uses low-power Bluetooth® LE—significantly lower energy than standard smartwatches. No Wi-Fi or cellular radio.
Personalized to You: Establishes your unique baseline for full-body health insights.
Easy to Clean: Simply clean with an antibacterial wipe.
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What the experts are saying
Frequently asked questions
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How does Petal Work?
Petal has eight advanced, clinical-grade Bio-Impedance Analysis (BIA) sensors. This low-power technology safely measures your body's unique electrical resistance to gather data. These sensors are non-intrusive, produce no harmful radiation, and are completely safe. They use the same technology found in high-end smart scales.
Petal's sensors collect data at the source of origination for greater accuracy — right at the locations of heart, breast, and thorax.
Precision Heart Metrics:
We measure ECG/EKG with accuracy verified against FDA-approved devices, providing highly reliable Heart Rate and HRV data to monitor your fitness level and overall health.
Additionally, Cardiovascular Disease is the leading cause of death for women in the US, yet symptoms often present differently in women than in men—particularly during perimenopause and menopause when hormonal changes can affect heart health. Petal provides women with the tailored insights needed to monitor their cardiovascular wellness through every stage of life.
Advanced Cycle Tracking:
Unlike traditional wearables that rely on basal body temperature taken from peripheral locations like the finger or wrist, Petal uses breast tissue measurements as a more direct biological indicator.
Your breast tissue and hydration levels undergo distinct, predictable changes throughout your cycle. Our sensors create a private, bias-free characterization of these fluctuations, allowing Petal to accurately track your cycle through your body’s unique tissue and ductal patterns.
Body Composition:
Your breast tissue is made of adipose (fat) tissue, which Petal's sensors can measure to understand your midsection and visceral fat percentages. This allows you to mitigate metabolic health risks and inform sustainable, data-driven lifestyle changes, as well as support your fitness goals.
Moreover, monitoring and reducing visceral fat (the fat surrounding your internal organs) can help with long-term wellness and disease prevention, especially post-menopause.
By combining this data with our proprietary AI based on real women's data, Petal gives you a 'big picture' view of your cardiovascular, metabolic, and hormonal health and how they interrelate. For example, you’ll be able to see how your cycle affects everything from stress to physical tenderness.
Is Petal safe?
Yes, 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.
Petal uses advanced, medical grade bio-impedance sensors—the same safe, non-radiative technology trusted by medical professionals in clinical devices and BMI scales, but operating at significantly less power.
Additionally, 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.
Do I have control over my data? Do you sell my data?
You have complete control over your data, and we do not sell or share your information to third parties without your consent.
If you consent, we will utilize anonymized and obfuscated health and demographic data for research purposes only. This research will involve analysis of statistical trends concerning the development, diagnosis, and treatment of cancer, cardiovascular conditions, and other disease conditions. This data will be owned by us, but you can opt out of providing further anonymized data at any time by navigating to your account settings once you receive the product, download the app, and set up your account.
Learn more in our Privacy Policy.
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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.