Your cycles are unpredictable.
Your life doesn’t have to be.
The first wearable designed to track reproductive health directly at the source, giving you a clearer picture of what’s happening in your body.
(Shipping Included)
100% refundable before shipment.
You have questions. Fibra helps you find the answers.
Cycle trackers predict. Fibra actually listens to your body
Built for real life.
to infer fertility.
Trackers
When your cycle is irregular, dates don’t tell
the whole story.
Vaginal pH
Detect meaningful changes earlier.
Every pH shift tells a story about your cycle, vaginal health and reproductive wellbeing.
Discharge
Understand your cycle with more confidence.
Follow discharge patterns to help you identify fertile windows, hormonal shifts, and reproductive transitions.
Temperature
Reveal personalized patterns.
Small temperature changes reveal bigger patterns related to ovulation, PMS menopause, and changing hormone levels.
Heart Rate
See how your body responds.
Heart rate changes provide insight into stress, recovery, cycle phases, and reproductive transitions.
Heart Rate Variability
Understand your resilience and wellbeing.
See how your body adapts beneath the surface to stress, recovery, and reproductive changes.
- The provided checkout link was out of date or invalid. No products were added to the cart.
Expected shipping January 2027
What women are saying?
Maria, 30
“Every fertility tracking tells me the same thing. Excited for Fibra’s personalized insights.”
Nina, 31
“I can finally know what everything means! Thank you for what you’re doing for women’s health!”
Jess, 28
“Losing weight seemed impossible for me until I started paying attention to my reproductive health.”
Rose, 27
“As a physician, women deserve continuous reproductive health monitoring. Fibra gives women what they need!”
Camila, 29
“At first I wasn’t sure if I should order now or wait but the fact that I get lifetime access to the app did it for me! <3″
Tammy, 27
“I used to constantly wonder if the changes I noticed were normal. Fibra is giving women clarity!”
Amanda, 33
“My body felt completely different postpartum. I love that Fibra s giving women so much clarity.”
Mitchel, 29
“If this helps me catch something earlier…it’s worth every dollar. Amazing to see product like this!!”
Charlotte, 31
“Got diagnosed with PCOS when I was 15. I’ve waited my whole life for something like this.”
Emma, 34
“As someone going through menopause this will change my life completely!”
Yusra, 29
“I love that Fibra is giving women a new way to understand their reproductive health.”
Sophia, 25
“If this actually works the way it says…this changes women’s healthcare”
Frequently Asked Questions
What exactly do I get with my Fibra preorder?
Your preorder includes 2 pairs of Fibra smart underwear, 1 detachable electronic module, and lifetime access to Fibra Premium, plus the exclusive Founders Edition benefits included with your order.
When will my Fibra ship?
Founders Edition orders are expected to begin shipping in January 2027. You’ll receive updates as your order moves through production and a tracking notification once it ships.
What if I change my mind before Fibra ships?
You can cancel your preorder before it ships for a full refund, including shipping. We want you to feel confident ordering early, not locked in.
My cycles are irregular. Will Fibra still work for me?
Yes, irregular cycles are one of the reasons Fibra was created. Instead of relying on calendar dates alone, Fibra continuously follows your changing reproductive patterns, including vaginal pH, discharge, temperature, HR and HRV, and updates your insights as your body changes.
Is my reproductive health data private and secure?
Yes. Your reproductive health data belongs to you. Your information is encrypted and securely stored, and you stay in control of what you choose to share and with whom.
How does Fibra work, and what do I actually have to do?
Wear it like your regular underwear. Fibra’s textile sensors continuously collect your body signals, the detachable module securely sends them to the app, and Fibra turns them into personalized insights. No daily tests or manual measurements.
What will Fibra actually tell me about my body?
Fibra helps you understand when your cycle or ovulation timing shifts, what’s typical for your body, changes in pH and discharge, why you may feel different today, and what your patterns suggest may be coming next. Your insights become more personalized as Fibra learns your patterns over time.
Do I need a subscription to use Fibra?
Your Founders Edition includes lifetime access to Fibra Premium, so there’s no additional monthly Fibra Premium subscription for your Founders Edition access.
What if Fibra isn’t right for me after I receive it?
Your purchase is protected by our 180-day satisfaction guarantee. Wear Fibra for 180 days and, if it still isn’t right for you, you can request a refund under the terms of our guarantee.
How do I wash and care for Fibra?
Simply remove the electronic module before washing. The underwear and textile sensors are designed to be washable and part of your everyday routine. Follow the included care instructions to keep your Fibra performing at its best.
Have a Question?