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Exceptional 4.9/5

Stop Guessing Your Reproductive Health.

The world’s first smart underwear  that tracks and explains your reproductive system. Capturing continuous, real-time data — so you can feel informed, prepared, and in control.

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Best Reproductive Health Monitoring Technology Company 2024 – Canada, by Tech Innovator Awards

Winner Of The Jury Award and The Audience Award At AAGEF 2024

Women Empowerment Award Finalist For Innovation (Powered By Rogers)

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Your Reproductive Health, Explained

You’ve been guessing your reproductive health — wondering what’s normal, what’s not, and what it all means. Until now.

  • Effortless Cycle Tracking: No logging, no guessing, no extra steps. Fibra tracks your reproductive system in the background — so you can anticipate what’s coming and feel more in control.
  • Effortless insights: Fibra works silently in the background — turning your reproductive signals into clear, real-time insights so you can finally understand what’s happening in your reproductive system.
  • Designed for Your Body: Unlike wearables, Fibra captures data directly from your reproductive system. Designed to feel like your favorite underwear — so understanding your body becomes effortless.
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How Fibra Gives You Clarity

Fibra™ tracks key signals from your reproductive system—powered by real biological data—to give you a complete, continuous picture of your cycle, not just once a day.

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  • Vaginal pH patterns – Highlight patterns linked to infections, fertility windows, and hormonal shifts — so you can better understand your reproductive system.
  • Volume changes in discharge – Helps you track how your cycle evolves across different phases. — including signals around ovulation, irregular cycles, and unexpected changes
  • Skin Temperature– Fluctuations are key for cycle tracking
  • Heart Metrics – Resting heart rate shifts with hormonal changes — especially across fertile and luteal phases—while HRV reflects stress and recovery, both shaping your cycle patterns.

Understands your body — in real time

Continuous data, translated into clear, personalized insight.

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  • See partterns across your cycle: Tracks how biomarkers shift across phases — so you can recognize what’s normal and spot meaningful changes.
  • Know your phase in real time: Identify your current phase and what’s next using live data — simplifying timing — so you can understand changes as they happen
  • Insights explained for you: Know what changed and why in context of your cycle — turning data into clarity — so you know what to expect and how to respond
Dr Milan Charvakar
Dr Milan CharvakarCEO/Founder Lotus Integrative Health | Fertility and functional Medicine Nurse Practitioner | UCSF Clinical Professor
" 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. "
Teresa Maoirano | Fertility Nutritionist
Teresa Maoirano | Fertility NutritionistFounder, Live and Love Nutrition
" 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 Maiorano
Teresa MaioranoFounder, Live and Love Nutrition
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.
Pari Saharkhiz
Pari SaharkhizAdvocate for holistic and medical approaches to fertility
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.
Bethany Gettis
Bethany Gettis– Former Nurse turned Certified Holistic Nutritional Consultant™ and Founder of Nutritious & Delicious
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.
Isabelle Lefebvre
Isabelle LefebvreIsabelle Lefebvre Vary – Executive Director at Fertility Friends Foundation
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.
Milan Chavarkar
Milan ChavarkarCEO/Founder Lotus Integrative Health | Fertility and functional Medicine Nurse Practitioner | UCSF Clinical Professor
I think what's great about FIBRA, it's another tool in our toolbox to understand what's happening with your fertility. So if we're tracking temperature or tracking heart rate variability, we can understand what's happening in the cycle. Fibra is just paving a pathway for information And I think there's so much more scope that we will see from it. There's so much more data that we'll be able to get. I think looking at vaginal discharge is something that isn't being done, and I'm excited to see what information we are going to get from vaginal discharge data.
Erin Fordham
Erin FordhamCo-Founder & President - Oasis Fertility Support Network
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.
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Slip It On. Sync It. Go About Your Day.

Exceptional 4.9/5

That’s it! Fibra tracks your reproductive system in the background — turning your body’s signals into clear, real-time insights as you live your life.

No logging. No guessing. No extra steps.

How to Use Fibra's Smart Underwear in Three Easy Steps

Step 1

Wear It. Snap It On

Step 2

Pair It With Your Phone

Step 3

Live Your Life

How It Works

More Than Four Million Data Points Collected to Date!

20 +

Years of experience

2 k+

People waitlisted for the product

2 M+

Data collected to date with the product

FIBRA X RADIO-Canada Interview

Fibra founder Parnian Majd shares how we’re closing the data gap in women’s health

*Owner of the video is the CBC

Community Voices

Links between diet and psychoirecgularities and fertility challenges my brain works like a flow chart so this is how I see things, but common factors definitely are inflammation- testing for inflammatory factors or having a conversation- can’t have healthy conception if there’s a lot of inflammation in the body the two fight each other.
Teresa MaioranoFertility Nutritionist
Blood sugar balances- insulin resistance- when insulin is high, it impacts the function of ovaries and ovulating, therefore you get fertility challenges through diet, nutrition lifestyle changes.
Emily GrantResearch Scientist
Thyroid is a big one that comes up, Thyroid conditions are a big one we have to address; it impacts weight challenges isn't a one on one basis it's not my go to it's more of a secondary thing outside all these factors.
Laura MitchellHealthcare Specialist
Fibra™ is a revolutionary product for women’s health. It’s not only non-invasive but also incredibly precise, giving women the ability to track their fertility like never before.
Rachel DavidsonWomen’s Health Advocate
Gut health is one that is a huge passion point of mine Addressing gut health and uterine health; poor gut health leads to overall poor health, and all these other signs and symptoms we address all the root causes.
Jessica LeeTech Entrepreneur
There are quite a few things that relate to psychooirregularities and ovulation - not ovulating which is anovulation, that can be really strongly impacted with dietary nutrition changes.
Chloe ReedManaging Partner
The fertility journey itself is a very physically and mentally stressful thing to go to so I work hard to try to reassure and give the confidence you’re doing what you can and when you can– and everything else is okay.
Lily SimmonsFounder, Mindful Path Coaching
I felt that there's a huge gap and need in the market for reproductive supplements, specifically PCOS supplements. We started with PCOS and women's fertility, and slowly there was potential for male fertility 2016, 9 years down the road, and happy to be here.
Madison WardFounder, Mindful Path Coaching
So I thought, what's a recurring challenge that you help people overcome in your practice? I would say first and foremost again it’s PCOS it’s 10-15% of women suffer from it, and then it’s also a lifelong condition that's something that’s hard to accept in many cases .
Avery PattersonCo-Founder, Fresh Start Digital
What I like about everything together is that it helps lessen the time. Because I think a lot of the women experiencing these fertility issues are in this time constraint and we only have this window and women are getting more and more stressed which doesn’t help the process. There’s so many avenues and combining them together i think is going to get you there alot faster.
Hannah GrayE-commerce Consultant
What I love about fibra and the data you guys track is that it helps pinpoint those fertile days for women and the other big thing is that it puts you in control of your own hormonal health journey. 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.
Grace MorganFrontend Developer
When women are on the IVF journey they feel like they don't’ feel like they have any control, it’s a great way to mentally help them gain back that control of their own health. It gives you personalized tips on your diet, lifestyle and it’s not a one size fits all, it's personalized to your body.
Abigail KellyUX/UI Designer
Theres not alot of stuff that has gotten much attention before in this area a lot of people aren’t looking, it helps catch those hormonal imbalances and issues quicker and giving you a better chance at getting pregnant and lessening that timeframe
Isabella HarrisMarketing Specialist
The really big game changer is helping women understand their bodies better and giving them the driver’s seat rather than handing it over to someone else and being told all these things, they're not really understanding. It's the cool new way, you’ve got it all on your phone and the new underwear, they're really soft and everything, made from natural materials and all, so I love that.
Olivia BrooksBusiness Analyst
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Insights from Fibra’s Pilot Study

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.
Pilot Study Participant #1
Pilot Study Participant #1
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
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smart wearables. cycle tracking, women's reproductive health

With Fibra, continuous insights tracking offers a complete and accurate picture of your reproductive health.

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smart underwear

Fibra replaces guesswork with real-time clarity—giving you continuous insight into your reproductive health so you can understand what’s happening and what’s coming next.

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Cyle tracking

Revolutionary Wearable Comfort with Cutting-Edge Features

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Smart Underwear Features 

Exceptional 4.9/5

4 days of battery life
90% cotton and natural fibers
Comfortable for 24/7 wear
No hardware electronics… everything is yarn-based!
Non-allergenics (explanation: we are ISO 10993 compliant)
Safe (we are IEC 60601 compliant)
Fibra combines ultimate comfort and stretchability with real-time tracking, offering seamless biomarker monitoring for a comprehensive view of your reproductive health.

Why Choose Fibra?

1. Comfortable, Non-Invasive Wearable

Smart underwear made with 90% natural fibers — soft, breathable, and stretchy. No hard gadgets or patches — just slip it on like regular underwear. ISO 10993, and IEC 60601 compliant — safe and non-allergenic.

2. Real-Time Reproductive Insights — No Manual Logging

Advanced sensors track heart rate, temperature, pH, and volume changes. Syncs with the Fibra™ app via Bluetooth Low Energy. You get instant cycle predictions and reproductive health insights without lifting a finger.

3. Trusted by Experts, Backed by Research

Recommended by nutritionists, physicians, and researchers. Featured in CBC Radio-Canada and praised for its innovation. Over 4 million data points collected from real users — and growing.

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Community Voices

Our Health System Supporters

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Our Community Supporters

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Our Partners

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Frequently Asked Questions

Fibra™ smart underwear uses proprietary yarn‑based sensors woven into the fabric to passively detect natural physiological signals during everyday wear, such as temperature trends, moisture patterns, pH changes, and heart rate signals. This information syncs with the Fibra™ app, where users can explore their personal trends and patterns over time based on their logged information and signals collected during wear.

Fibra is designed to support body awareness and cycle pattern insights without requiring manual tracking.



Fibra™ passively captures natural physiological signals that can change throughout the menstrual cycle, including heart rate trends, skin temperature patterns, vaginal pH trends, and changes in moisture patterns associated with vaginal discharge. These signals are displayed in the Fibra™ app so users can explore their personal trends and patterns over time based on their logged information and signals collected during everyday wear.

Fibra is designed to support personal body awareness and cycle‑related pattern insights. It is not intended for medical diagnosis or treatment.



Fibra™ is designed with advanced textile sensors that passively capture physiological signals during everyday wear. These signals are used to help users observe personal trends and patterns over time, supporting greater awareness of their body’s natural rhythms.



Fibra™ can be worn throughout the day as part of normal daily wear. However, users can also choose to wear it for shorter periods of time, depending on their routine and comfort. The app may display signals collected during wear to help users observe personal trends over time.

Fibra™ smart underwear is designed for everyday wear and can be machine‑washed using gentle settings. Following the recommended care instructions helps maintain the garment and its integrated textile components. Detailed care instructions are provided with the product.



Is my data stored securely and privately?

Yes. Fibra™ uses encryption and secure storage practices to help protect your information. We prioritize user privacy and follow established data protection standards so users can manage and control access to their personal information within the app.



Yes. The Fibra™ app is used to view and explore the signals collected during wear. It provides an easy‑to‑use interface where users can see their personal trends and patterns over time based on their logged information and signals captured by the garment.



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



The Fibra™ garment is powered by a rechargeable battery that can last up to approximately four days, depending on usage. It can be recharged using the included USB charging cable. Detailed charging instructions are provided with the product.



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Smart wearables, cycle tracking, women's health

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