Plus-size period panties: total comfort up to 5XL

Available from 2XL to 5XL (US 14–24 approx.), our plus-size period panties offer protection, support and comfort. Suitable for all flows, they are fully lined with certified organic cotton to be gentle on your skin.

Culotte menstruelle grande taille Clara pour flux très abondant en coton bio

Culotte menstruelle Clara de Louloucup, vue de face, flux très abondant en talle XL

Clara - Plus-size period underwear for very heavy flow

3XL 4XL 5XL

Culotte menstruelle Mathilde de Louloucup, en coton bio OEKO-TEX avec finitions dentelle

Culotte de règles noire flux abondant, modèle Mathilde en coton bio

Mathilde – Plus-size menstrual panty for very heavy flow

XXL XXXL XXXXL XXXXXL

Liv – Seamless plus-size period underwear for very heavy flow

2XL 3XL 4XL 5XL

Culotte menstruelle Léo flux abondant motif léopard en coton bio certifié

Culotte de règles Léo pour flux abondant, imprimé léopard élégant

Leo – menstrual brief for very heavy flow +++++

XS S M L XL XXL 3XL

Culotte menstruelle noire grande taille avec ceinture plumetis, vue de face

culotte menstruelle flux abondant Louloucup

Fanny - Plus-size heavy-flow period panty

2XL 3XL 4XL

culotte menstruelle grande taille coton bio

culotte menstruelle flux abondant coton louloucup

Jade – Plus-size menstrual brief for very heavy flow ++++++

2XL 3XL 4XL

culotte-menstruelle-de-regles-bio-grande-taille-bio

culotte-menstruelle-taille-haute-grande-taille

Margot - Plus-size medium-flow period panty

2XL 3XL 4XL XXXXXL

culotte menstruelle sans couture flux abondant grande taille

Gaby - Plus-size medium-flow period panty

XXL XXXL 4XL

culotte menstruelle flux moyen Ella louloucup

Ella - Plus-size period underwear for medium flow +++

2XL 3XL 4XL 5XL

Sold Out

Lily – Plus-size period underwear for medium flow +++

XXL XXXL

How to choose the right plus-size period panty?

A 3XL, 4XL or 5XL period panty needs to deliver absorbency, support and long-lasting comfort. At Louloucup, every plus-size style is fully reworked to hug curvy figures without squeezing.

Depending on your flow:

Light flow: ideal at the beginning or end of your cycle.
Medium flow: absorption equivalent to about 3 tampons.
Heavy flow: reinforced protection for 8 to 10 hours.
Very heavy flow: extended absorbent area at the front and back of the panty for maximum security (long days or all night).

👉 Also discover our heavy-flow period panty collection.

Clara, Mathilde, Liv – styles available from 2XL to 5XL

Our best-sellers are available in plus sizes so you never have to compromise on style or performance:

Clara – a high-waisted panty with lace and extra support, ideal for very heavy periods.
Mathilde – a feminine shorty with very high absorbency.
Liv – a seamless style, super thin with a second-skin effect, totally invisible under fitted clothing.

👉 Discover all our period panties.

Available sizes: from 2XL to 5XL (US/UK approx. 16–26), including 3XL and 4XL depending on availability, stock and style.
Absorbency: effective for light to very heavy flow.
Materials: absorbent zone in certified organic cotton in contact with the intimate area, PFAS-free and nanoparticle-free.
Protection: up to 12 hours without leaks.

👉 Need help? Check out our size guide.

Why choose Louloucup plus-size period panties?

Truly inclusive sizes from 2XL to 5XL (44 to 54)
: each plus-size period panty is designed to fit comfortably on fuller figures, without squeezing the tummy or digging into the hips.
Skin-friendly materials
: our styles use GOTS-certified organic cotton and OEKO-TEX Standard 100 textiles, guaranteed PFAS-free, to respect your intimate area during your period.
Very reliable absorbency
: each Louloucup plus-size period panty can absorb up to 40–50 ml, the equivalent of several tampons, for up to 12 hours of protection depending on your flow.
Designs tailored for comfort and support
: high-waisted (Clara), comfy boyshort (Mathilde) or invisible seamless style (Liv), so you can find the plus-size period underwear that suits your body shape and your style.

“Huge absorbency, great fit and the panty gives full coverage!” — Nathalie R., 02/04/2026

At Louloucup, our plus-size period panties are designed to offer comfort, protection and confidence, whatever your body shape.

FAQ — Plus-size period panties

Are plus-size period panties suitable for heavy flow?

Yes. A plus-size period panty can offer very high absorbency depending on the style. At Louloucup, some styles absorb up to about 50 ml, the equivalent of several tampons, for reliable protection over several hours.

Are plus-size period panties comfortable around the tummy?

Yes. A plus-size period panty is designed to hug your curves without squeezing your tummy or hips. High-waisted or seamless cuts provide gentle, comfortable support all day long.

Can you wear plus-size period underwear all day long?

In most cases, yes. A highly absorbent plus-size period panty can be worn for up to about 12 hours depending on your flow. For very heavy flows, it may be best to change it earlier.

Is plus-size period underwear discreet under clothes?

Yes. Plus-size period panties are designed to stay discreet even under close-fitting clothes. Seamless versions, like some Louloucup styles, are particularly invisible under leggings or dresses.

How do you wash plus-size period panties?

Plus-size period panties are easy to wash: rinse them in cold water after use, then machine wash at 30°C. With gentle care, they can be reused for several years.

Is plus-size period underwear suitable for postpartum?

Yes. Louloucup plus-size period panties are particularly suitable for postpartum bleeding (lochia). High-waisted styles like Clara provide gentle tummy support after birth without putting pressure on a C-section scar.