Menstrual thong: invisible, sexy protection

The elegance of lace combined with the softness of organic cotton. Our menstrual thongs offer up to 12 hours of invisible protection under your most fitted clothes. Ideal for light flows, spotting and everyday discharge.

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femme portant un tanga menstruel élégant

Chloé – Light-flow menstrual thong

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XS S M L XL XXL

Mia – Light-flow period brief

XS S M L XL

Why choose a Louloucup menstrual thong?

An organic menstrual thong is the perfect ally for tight outfits: sports leggings, skinny jeans or a fitted dress. Thanks to its minimalist cut and flat finishes, it stays completely invisible under clothing.

It’s an eco-friendly, healthy alternative to disposable panty liners. A period thong lets you:

Manage light flow or spotting.
Absorb daily vaginal discharge while staying dry.
Use it as backup protection with a menstrual cup, a menstrual disc or a menstrual sponge.

Our styles are designed with a certified organic cotton interior, guaranteed PFAS-free and tested according to OEKO-TEX® Standard 100. They are made in Portugal or in non-European countries (depending on the style) in specialist lingerie workshops renowned for their textile expertise.

Absorption tailored to light flow

The Louloucup menstrual thong absorbs the equivalent of around 1 to 1.5 tampons (up to 30 ml). It’s recommended for the beginning and end of your period, spotting or everyday discharge.

For extra protection at night or in case of heavy periods, check out our heavy-flow collection.
Want total invisibility with higher absorption? Explore our seamless styles.
For younger users, discover our teen collection in certified organic cotton.
Looking for a very high-cut bikini bottom? Discover our Manon menstrual bikini bottom.

Menstrual Thong FAQ

How absorbent is a period thong?

It absorbs the equivalent of about 1 to 1.5 tampons. The menstrual thong is ideal for light flows, spotting or the end of your cycle.

Is the menstrual thong really invisible?

Yes. Its minimalist cut and flat seams prevent any visible lines under clothing, even the tightest outfits.

Where are your menstrual thongs made?

The Chloé style is made in Portugal. The Mia style is made in China. All our products are made with OEKO-TEX® Standard 100 certified fabrics.

What is it made of?

The inside of all Louloucup panties is made from GOTS-certified organic cotton. The fabrics are tested PFAS-free and free from harmful substances.

How do I care for my period thong?

Rinse in cold water after use, machine wash at 30°C without fabric softener, then air dry to preserve elasticity and absorbent performance.

Can a menstrual thong replace a panty liner?

Yes, that’s actually its main purpose. The Louloucup menstrual thong absorbs the equivalent of 1 to 1.5 tampons, making it the perfect protection to replace disposable panty liners in everyday life. It’s washable, reusable and made without harmful substances.

Menstrual thong or period underwear: what’s the difference?

The main difference is the cut. A menstrual thong is very high-cut and completely invisible under tight clothing. Classic period underwear offers fuller coverage and higher absorption. If you have a heavy flow, period underwear will be more suitable.

Is there a menstrual thong for heavy flow?

The Louloucup menstrual thong is designed for light to medium flow. For heavy or very heavy flow, we recommend our heavy-flow collection, which offers absorption of up to 5 tampons.

How much does a Louloucup menstrual thong cost?

The Louloucup menstrual thong starts at €28.90 per piece. Thanks to the automatic discount applied at checkout, the price drops to €22.90 per thong from 5 items — perfect for building a complete set for your whole cycle.