Best period underwear for very heavy flow: our comparison
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Time to read 7 min
Do you have very heavy or intense periods? Maybe you use a copper IUD that makes your periods heavier? And you want to wear period underwear that’s as reliable as possible to handle that very heavy flow?
Period panties are THE menstrual and hygienic protection that will change your life. Healthy, organic, soft, comfortable, and absorbent—period underwear has it all. But is it effective at managing, capturing, and holding back very heavy flow without overflowing?
Check out our complete comparison of the best Louloucup heavy flow period panties. These five panty models are specially designed for the heaviest flows. With their innovative technology, exceptional comfort, and a range of sizes to fit all body types, these products are sure to meet all your needs—even the most demanding ones.
In this article:
🪷 Clara, Mathilde, Liv, Leo, and Jade 🌸 Who is this category of period underwear for? 🌸 What’s the absorbency level? 🌸 The 6 benefits of these special period underwear 🌸 Comparison: our best menstrual underwear for very heavy flow 🪷 Criteria for choosing your period underwear Clara: the irresistible high-waisted period panty Mathilde: the mid-rise period underwear that gets everything right Liv: the seamless, invisible period underwear Leo: the low-rise period underwear—graaaoouu! Jade: organic cotton period underwear 🪷 In short: Louloucup’s very heavy-flow period panties FAQ: best heavy flow period underwear To learn more ... Do you have a very heavy flow?
🪷 Clara, Mathilde, Liv, Leo, and Jade
🌸 Who is this category of period underwear for?
At Louloucup, the Clara, Mathilde, Jade, Liv, and Leo models are specially designed to meet the needs of teenagers and women with heavy flow, very heavy periods, or what’s known as hemorrhagic menstruation, whether naturally occurring or due to other reasons (contraception, copper IUD, endometriosis, fibroids, polyps, or hormonal imbalances).
These period underwear with double absorption are also designed to meet specific needs:
during postpartum to absorb postpartum bleeding, especially lochia,
throughout your life or, more specifically, during perimenopause to absorb light bladder leaks.
🌸 What’s the absorbency level?
Clara, Mathilde, Jade, and Liv have an extremely high absorbency capacity. It’s the highest absorbency you can currently find on the market: the absorbent layer in the underwear can hold the equivalent of over five tampons. This guarantees total security. You can feel confident and not worry about leaks or overflow.
Leo, the latest addition released in 2025, has an impressive absorbency equivalent to 4 tampons.
🌸 The 6 benefits of these special period underwear
They can be worn day or night. Comfortable under clothes or pajamas, ultra-discreet, and reliable: you can go an entire day or night without worry!
They’re safe. Clean and transparent composition. Non-toxic fabrics, free from harmful chemicals, with various certifications to guarantee our customers’ safety.
A lining made from certified organic cotton.
A wide range of sizes (depending on the model) from teen XXS to plus sizes, up to 5XL.
A gentle price (single unit around €28.90 or €33.90) with discounts for multi-packs.
A high level of discretion. You might think or assume that, since the underwear is so absorbent, the lining would be visible, puff up, or be very thick—but that’s not true!
🌸 Comparison: our best menstrual underwear for very heavy flow
|
Model |
Absorption capacity (in tampons) |
Materials & Certifications |
Details |
Recommended wear time |
|
Clara |
5 tampons |
Organic cotton + Oeko-Tex Standard 100 |
High-waisted with black lace |
Up to 7 hours (very heavy flow) |
|
Jade |
5 tampons |
Organic cotton + Oeko-Tex Standard 100 |
Organic cotton inside and out + wide gusset |
Up to 7 hours (very heavy flow) |
|
Liv |
5 tampons |
Organic cotton + Oeko-Tex Standard 100 |
Seamless, completely invisible |
Up to 7 hours (very heavy flow) |
|
Leo |
4 tampons |
Organic cotton + Oeko-Tex Standard 100 |
Pretty pattern + made in Portugal |
Up to 6 hours (very heavy flow) |
|
Mathilde |
5 tampons |
Organic cotton + Oeko-Tex Standard 100 |
Fairly high-waisted with black polka dots |
Up to 7 hours (very heavy flow) |
🪷 Criteria for choosing your period underwear
To pick a period panty that’s suitable for very heavy flow, focus on these key features:
High absorbency: choose styles that hold the equivalent of 4 or 5 tampons for optimal coverage and peace of mind for hours.
Leak-proof technology: opt for multi-layer systems with reinforced edges to prevent leaks. Our panties all have two absorbent layers.
Oeko-Tex certified materials: choose organic cotton free from harmful chemicals for maximum hygiene and to protect your intimate health.
Size that fits your body shape: check the size guide for the perfect fit and uncompromising performance.
🪷 Louloucup’s heavy flow models
The Louloucup menstrual panties for very heavy flow combine innovative technology and ultimate comfort. With an absorbency capacity of up to 5 tampons, they're designed to offer optimal protection.
The multi-layer structure built into each style efficiently locks in blood with no leaks, even on your heaviest days. Made from natural materials like organic cotton, they’re gentle on the skin and certified Oeko-Tex.
Their full-coverage cut fits all body types, guaranteeing a perfect fit day and night. These features make them a reliable solution for managing heavy flow with peace of mind.
Clara: the irresistible high-waisted period panty
The Clara by Louloucup is specially designed for very heavy flows. Available up to size 5XL, it absorbs as much as 5 tampons. Its high-waisted cut, with extra absorbent zones in the front and back, ensures maximum protection—even when you’re active or sleeping.
A user, Laetitia L., shares: "With my 5 Clara panties, I can move freely without any worries."
Sold at €33.90 (excluding custom packs with sliding prices!), this model combines performance and comfort to meet the needs of heavy flows.
Mathilde: the mid-rise period underwear that gets everything right
The Mathilde model stands out for its long-lasting comfort. Designed for heavy flow, it combines an interior of organic cotton with absorption equivalent to 5 tampons.
A customer with adenomyosis confirms: "The Mathilde lets me go all day without discomfort."
Its soft fabric and tailored fit make it an ideal choice for long days. Thanks to its leak-proof technology, it offers reliable protection without compromising comfort.
Liv: the seamless, invisible period underwear
Black, seamless, and invisible, Liv is a second skin you can wear with total confidence. Simple, basic, and fuss-free, Liv is loved by teens, new moms, and athletes alike. Able to hold up to 60 ml of blood, Liv can be worn under anything from business suits to workout leggings. Available from XXS to 3XL.
The teen version in XXS is €24.90, while the adult version starts at XS for €32.90.
Leo: the low-rise period underwear—graaaoouu!
😍 We just love its low-rise cut and tiger print!
Louloucup’s latest release in 2025 is made from organic cotton, ultra discreet, manufactured in Portugal, and available in sizes XS to 3XL! Who can top that?
Leo is $28.90 (no bundle discount!).
Jade: organic cotton period underwear
Jade is the period underwear you need:
- made in Europe (in Portugal),
- a liberty print,
- made of organic cotton,
- a double-layer absorbent membrane,
- But most importantly, a gusset about 9 cm wide (wider than average) to ideally handle a central flow,
From XS to 3XL, €28.90 (excluding custom bundle discounts)!
🪷 In short: Louloucup’s very heavy-flow period panties
The Louloucup period panties for very heavy flow combine innovative technology with absolute comfort. With an absorbency capacity of up to 5 tampons, they’re designed to provide optimal protection.
The integrated multi-layer structure in every model effectively holds blood without leaks, even on your heaviest days. Made from natural materials like organic cotton, they’re gentle on the skin thanks to Oeko-Tex certifications.
Their full-coverage fit adapts to all body types, ensuring a flawless fit day or night. These features make them a reliable solution for managing heavy flows with peace of mind.
Louloucup’s period panties for very heavy flow offer real benefits for everyday life:
Exceptional comfort: their organic cotton and ergonomic fit allow for extended wear without discomfort.
Optimal protection: Leakproof technology guarantees total security, even during heavy flows or overnight.
Sustainable savings: reusing them reduces your annual spending on disposable menstrual products.
Eco-friendly commitment: Each pair of underwear helps reduce non-recyclable menstrual waste.
FAQ: best heavy flow period underwear
Is Louloucup suitable for postpartum use?
Louloucup offers postpartum underwear designed for comfort and reliability after childbirth. They absorb heavy postpartum bleeding (lochia), with a capacity equal to 5 tampons.
Made from organic cotton, they’re soft and comfortable, available from XS to 5XL. Prices are on a sliding scale, and promotions are regularly available.
How do you choose between different Louloucup models for heavy flows?
To choose the right Louloucup model for your heavy flow, consider the different styles (classic, high-waisted, thong, bloomer, shorty) and their cuts. All models are designed to be as reliable as a tampon or pad, thanks to technical fabrics that absorb and lock in your flow.
Comfort is ensured by organic cotton, which prevents irritation. The Mathilde model is especially popular for very heavy flows, providing all-day protection. The brand offers customizable packs and regular promotions.
Louloucup: covered by health insurance?
Currently, there is no information available about Louloucup period underwear being reimbursed by social security.
It's recommended to visit the Louloucup website directly or contact social security to get accurate and up-to-date information on this topic.
