Understand Your

Reproductive System,

Every Day

The first smart underwear designed to reveal what your reproductive system is telling you.

Continuous, Direct, Intelligent

Founding Member Pricing

Limited-time launch pricing before Fibra becomes publicly available

30% off your device

Lifetime Premium app membership

Exclusive access to new features

Exclusive events in your city

Founding Member pricing ends once all spots are claimed.

Founding Members ship January 2027

Featured In

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THE PROBLEM

You shouldn’t have to

guess

 about your own body

Most women are left guessing when their body is already trying to tell them.

SYMPTOMS

You feel something but dont know why.

smart underwear, cycle tracking, women's health

SNAPSHOTS

Tests and apps only show isolated moments

GUESSWORK

You are left connecting the dots alone

MISSED

OPPORTUNITIES

Important changes often go unnoticed

DESIGNED FOR YOU

One Body. Thousands of 

 Questions.

Fibra helps you better understand the patterns behind your reproductive health.

so you can feel informed, prepared, and in control

Understand

Your Cycle

Know what to expect throughout your cycle with continuous insights.

Understand Your Hormones

Know what your hormones are telling you…

Understand Your Symptoms

See how changes in your reproductive system affect your mood, sleep, energy, and overall well-being.

Vaginal Health Awareness

Understand Changes before symptoms become noticeable.

Fertility

Awareness

Better understand your fertile window and ovulation-related trends, to support your fertility decisions

Postpartum & Recovery

Stay connected to your body’s recovery and changing patterns after pregnancy.

Perimenopause &

Menopause

Understand how your body changes through menopause and what actions to take.

Fitness Performance Optimization

Train smarter based on what is working for your reproductive system.

“Every day your body is changing,

For the first time, you will understand why.”

FROM BIOMARKERS TO UNDERSTANDING

Your reproductive health. Measured at the source. No approximations.

Clarity Starts

with understanding 

your body.

Continuously Measure

1

Securely Connect

2

Reveal Hidden

Patterns

3

Deliver Personalized Insights

4

Measured at the source

Capture continuous reproductive signals where reproductive changes naturally occur.

Continuous, not occasional

24/7 monitoring reveals patterns snapshots miss.

AI finds the patterns

Advanced algorithms turning biological signals into meaningful patterns.

Personalized for your body

Personalized guidance tailored to your unique reproductive patterns.

“

Fertility is a complex puzzle. Diet, stress, movement, toxins, hormones, they all matter. When we address each piece, that’s when we start seeing incredible outcomes. That’s why I love what Fibra is doing with cycle and temperature tracking, it brings the full picture into focus.

Dr Milan Charvakar  

CEO/Founder Lotus Integrative Health | Fertility and functional Medicine Nurse Practitioner | UCSF Clinical Professor

“

I think your product as soon as I saw it I’m like oh this is gonna allow women to feel like it’s just part of their day, it’s not an additional mental thing you have to take on. Knowing your fertility window, what your cervical mucus looks like- I’m really excited about that, alleviating those pain points those physical and mental stressors for people. I’m excited to see how this is working its a very exciting technology – the ability for women to know what’s going on in their body. It’s non-intrusive and respectful and it aligns with our comfort levels and takes away that stress and I’m excited to see where it goes and how it’s going to impact all the women out there.

Teresa Maoirano 

Founder, Live and Love Nutrition

“

I know firsthand how important it is, and it’s actually very amazing and exciting what you are doing giving that control to women to be able to monitor the status of their hormones and what’s going on in their bodies on an app in their phone without having an invasive method of trying to get those results; just with a simple normal underwear. This is something for women in all stages of their life, not just for PCOS or women trying to conceive. It’s a holistic view of what’s going on in your body, i’m excited and eager to see the product in the market.I know firsthand how important it is, and it’s actually very amazing and exciting what you are doing giving that control to women to be able to monitor the status of their hormones and what’s going on in their bodies on an app in their phone without having an invasive method of trying to get those results; just with a simple normal underwear. This is something for women in all stages of their life, not just for PCOS or women trying to conceive. It’s a holistic view of what’s going on in your body, i’m excited and eager to see the product in the market.

Pari Saharkhiz 

Advocate for holistic and medical approaches to fertility

“

It’s a high-tech underwear that’s easily connected to an app on your phone and it’s basically giving you a personal fertility and hormone tracker 24/7, so that’s what I love about it. So now you have something that’s in your underwear drawer that you can use to work with your doctor or someone in nutrition, it works alongside any fertility treatments you’re doing, it’s an enhancement.
It gives you personalized tips on your diet, lifestyle and it’s not a one size fits all, it’s personalized to your body.

Bethany Gettis 

Former Nurse turned Certified Holistic Nutritional Consultant™ 

Founder of Nutritious & Delicious

“

I really commend what you’re doing with fibra because its very important to get that information out there, to provide tools that will help women track more data on their reproductive health.
you’re creating lots of education and awareness and that’s exactly what communities and women need.

Isabelle Lefebvre

Isabelle Lefebvre Vary | Executive Director at Fertility Friends Foundation

“

I’m a big believer in making life easier. If there is something that can make my life easier, I’m here for it. And so I think fibra has the potential to be just a beautiful and empowering companion for anybody who’s trying to conceive, especially in the early stages when, you know, before they’re in clinic settings or, I mean, even alongside treatment plans I think we can actually use it as a tool to, like, you know, be more, productive at certain times of the month, be more athletic at certain times of the month. The problem with other apps is they are extremely generic. So they take a very, generalized algorithm, and they apply that to every single woman on Earth. Women who have, PCOS and endometriosis, I have PCOS too, and my app is never accurate for me. You can get women into these underwear when they’re young or when they’re, like, learning about their bodies and using that education to lead to early action, better planning, fewer surprises, you know.

Erin Fordham  

Co-Founder & President – Oasis Fertility Support Network

“

The fertility journey is stressful and often invasive, from medication to needles. That’s why I believe Fibra will help alleviate both the physical and mental stressors, allowing women to feel like it’s just a natural part of their day rather than another burden to manage

Teresa Maoirano   |   Fertility Nutritionist

Founder, Live and Love Nutrition

BUILT ON REAL DATA

5M+

Biometric Data Points

500k+

Minutes of Monitoring

95%+

Cycle Accuracy 

Validated against lab results

and clinical standards

5+

Years of Research

24/7

Continuous Monitoring

Built on

millions

of signals.

FEATURED ON CBC

Closing the data gap

in women’s health.

Fibra founder Parnian Majd shares why women deserve better health data.

INSIGHTS FROM FIBRA COMMUNITY

Real women. 

Real insights.

It is honestly a black box for me, I didn’t really understand what was going on with my cycle or symptoms. Fibra gives insights that can help me navigate my reproductive health more intelligently. It’s empowering to feel in tune with my body.
Participant #1
Participant #1Tester
There’s so much we don’t know about what’s going on in our bodies - and when something feels off, waiting months to see a gynecologist can be frustrating. I just wish I could track these parameters myself. Fibra can give me that power.
Pilot Study Participant #2
Pilot Study Participant #2
It’s really hard to get a hold of a specialist just to start understanding what’s going on in your body - and that process can take ages. Fibra can help me build a preliminary understanding so I can actually make sense of things before I dive deeper.
Pilot Study Participant #3
Pilot Study Participant #3
I have PCOS and hyperthyroidism, so my hormones are all over the place - and it’s hard to know what’s actually helping or hurting. Fibra can give me real data to make informed decisions about my body, from diet to supplements. I had no idea how pH impacted my health until nowfinally, I feel like I have a clearer picture and a way to take control.
Pilot Study Participant #4
Pilot Study Participant #4
Women’s health is so often overlooked. I had to see five different general practitioners before I was finally referred to a gynecologist - and even then, I was misdiagnosed with IBS. The emotional toll of not being believed is real. That’s why I’m so grateful for Fibra. It’s putting women back in the driver’s seat of their health. Now, I can track what’s happening and show real data — and that’s powerful.
Pilot Study Participant #5
Pilot Study Participant #5
After taking a course on AI and sociology, I became really aware of how sensitive period tracking data can be - but I also know how valuable it is. With an IUD, my cycle has been all over the place, and I’ve often wondered if birth control has messed up my reproductive health. Fibra offers a safer, more empowering way to understand my body. It gives me that reassurance I’ve been looking for, without compromising my privacy.
Pilot Study Participant #6
Pilot Study Participant #6
Sometimes, if the doctor is male, I don’t feel comfortable opening up - so I end up avoiding the visit altogether. With Fibra, I feel like I’m taking things into my own hands. It gives the control and confidence to understand what’s going on without having to rely on someone who might not fully get it.
Pilot Study Participant #7
Pilot Study Participant #7
I work in women’s health and pediatrics, so I know firsthand how often women are left guessing about their own bodies. I have irregular periods myself, and it’s always a surprise; I never really know when to expect it. That’s why I love that Fibra is built from a woman’s perspective. It provides peace of mind and helps assure that everything’s okay, even when my cycle isn’t regular. That kind of clarity is something every woman deserves.
Pilot Study Participant #8
Pilot Study Participant #8
As a biomedical science student and someone who volunteers for a period poverty charity, I’ve seen how little there is out there when it comes to understanding women’s health. It’s frustrating especially when reproductive health affects so much of our lives. Fibra feels like a step in the right direction. It’s smart, empowering, and finally focused on giving women the knowledge they deserve about their own bodies.
Pilot Study Participant #9
Pilot Study Participant #9

Frequently Asked Questions

What Is Fibra

For years, women have been expected to understand their reproductive health by paying attention to symptoms, tracking dates, and hoping they don’t miss something important.

Fibra changes that.

Fibra is the world’s first Continuous Reproductive Monitoring platform. Using patented smart-textile technology, Fibra continuously measures biological information directly from the reproductive system and transforms it into personalized understanding.

Instead of relying on occasional snapshots, Fibra helps you better understand your reproductive health every day.

Most wearables estimate reproductive health using indirect signals like heart rate, skin temperature, and sleep. Those signals are valuable for understanding your overall health, but they weren’t designed to continuously understand your reproductive system.

Fibra helps you understand what’s happening inside your reproductive system.
Instead of estimating reproductive health from indirect signals like heart rate or skin temperature, Fibra continuously measures biological information directly from the reproductive system. That gives you a clearer understanding of your reproductive health, helping you recognize changes earlier, understand patterns over time, and make decisions with greater confidence.

The closer you measure to where something is happening, the better you can understand it.

You wouldn’t measure your heart to understand your lungs.

Or your temperature to understand your glucose.

Reproductive health is no different.

Today’s wearables estimate reproductive health from signals like heart rate, sleep, and skin temperature. Fibra measures biological information directly from the reproductive system.

That means less guessing and more understanding.

Instead of wondering why something changed, you can begin to understand what’s changing, recognize patterns over time, and make more informed decisions about your reproductive health.

No.

Fibra is designed to help you better understand your reproductive health between appointments—not replace your healthcare provider.

By helping you recognize changes, understand patterns over time, and feel more informed about your reproductive health, Fibra makes it easier to ask better questions and have more meaningful conversations with your doctor.

Fibra is designed for general wellness and is not intended to diagnose, treat, cure, monitor, or prevent any disease or medical condition. If you have concerns about your health or experience new or persistent symptoms, you should always consult a qualified healthcare professional.

Is my data private?

Absolutely.

Your information is encrypted, securely stored, and protected using industry-standard security practices. Most importantly, your data belongs to you. You’re always in control of what you choose to share and with whom.
Your reproductive health belongs to you.
Your data does too.

Taking care of Fibra is just as easy as wearing it.
It’s machine washable and dryer safe, so you can care for it the same way you care for your everyday underwear. We’ll provide simple care instructions with every product
Because understanding your reproductive health should fit naturally into your life—not add another thing to your to-do list.

The Fibra™ app is compatible with both iOS and Android devices and works with most modern smartphones and tablets.

Rechargeable battery lasting up to four days, depending on usage. It can be charged using a USBC cable.

Have a Question? Ask a Question