Simple by design
Using Femora is as easy as 1 · 2 · 3
Wear it. Snap it on.
Slip into the softest pair in your drawer and click the coin-sized unit onto the magnetic waistband. It sits flat, shows under nothing, and feels like nothing.
Pair it with your phone.
Open the app once and pair over Bluetooth in under two minutes. After that, the unit stores your data on board and syncs whenever you open the app.
Live your life. We've got the data.
Overnight and around the clock, five signals stream in. Wake up to cycle insights, fertile-window estimates, and patterns that update as your body does.
Everything it does while you live your life
- Safe for all-day and overnight wear
- No wires, nothing external against your skin
- Auto-syncs with the Femora app
- Soft, stretchy, breathable cotton knit
- Real-time cycle & fertility insights
- Up to 4 days of battery, 1 hour to recharge
- Charts, predictions and health tips
- You control your data — export or delete anytime
Expert voice
“The most exciting thing about Femora is the control it gives women back.”
Dr. Parvaneh Saidi, MD
CEO & Co-founder, Elan Women's Health
The science inside
From yarn, to knit, to data.
Designed for comfort
Seamless knit, tagless finish, nothing rigid anywhere.
Battery life
Up to 4 days per charge — wear through your weekend.
Sensors
HR, HRV, skin temperature, pH & discharge — from fabric, at the source.
Connectivity
Bluetooth Low Energy with on-board encrypted storage.
Washable
Cold machine wash in the included bag. Air dry. Repeat.
Safety-first design
IEC 60601-informed engineering, ISO 10993-screened materials.
Research
Real-time clarity into your reproductive health — no more guesswork.
Our team's sensor research is published in peer-reviewed journals, and our materials pass independent biocompatibility screening.
Published research
Enhanced Sensitivity and Stability of Wearable Temperature Sensors
A novel approach using PEDOT:PSS — the first published paper from the Femora team.
Stop guessing. Start knowing.
Secure your spot in the first production run — the Founders Offer ends when it's gone.
Femora is a consumer wellness product, not a medical device. Insights are for general wellness purposes only.
Be part of the future of women's health.
Get the electronic unit plus two free pairs of smart underwear for US$99.99 — limited to the first 50 units, while helping shape what comes next.