Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual
Menstrual Bikini Panty 🩸 | Libertad Menstrual

Menstrual Bikini | Black

2 Reviews

Medium absorption period panty / moderate flowMedium front coverageMedium rear coverage

Leak-proof menstrual protection for beach and pool days
Our menstrual bikini bottom is designed to absorb up to 4 tampons (40 ml) of menstrual flow, ensuring comfort and safety. Enjoy your days in the sun without worries, and pair it with your favorite bra to create the perfect look.

Colour
  • Black
Size
  • S
  • M
  • L
  • XL
H971
Last item in stock
€29.95
Tax included Delivery 1-2 days in Spain - 5-10 days in Europe

 

Black period bikini bottom

Soft, breathable material with leak-resistant technology

This black period bikini bottom is made from soft, breathable fabric. It is designed to absorb menstrual flow effectively while adding an extra protective barrier to help prevent leaks. It is ideal for light-flow days or as additional protection on heavier-flow days, giving you the security and freedom you need.

Main benefits

  • Absorbs up to 4 tampons: perfect for light or moderate flow, or as extra support on heavier-flow days.
  • Light and discreet: as comfortable as a regular bikini bottom, without swelling in the water and with anti-odour technology for extra confidence.
  • Easy to mix and match: wear it with your favourite bikini tops and keep your own style, even on period days.

A reusable option for summer

Our black period bikini bottom not only offers security at the pool or beach, but also gives you a reusable and more sustainable alternative. LIBERTAD EN TODA REGLA, so you can enjoy every day of your holiday with style and confidence.

Freedom under the sun

Enjoy summer without limits with our black period bikini bottom. This technical swimwear bottom is designed for those who want to swim at the beach or pool with greater confidence during their period. Thanks to its minimalist and functional black design, this period bikini bottom pairs easily with any swim top you already have, letting you create a personalised look full of style.

What makes our black period bikini bottom special is its invisible absorbency of up to 4 tampons (40 ml). Unlike traditional methods, this garment does not swell when it comes into contact with water and keeps its original shape, helping you feel discreet while swimming or sunbathing. Its stretchy polyamide and elastane fabric provides a comfortable fit that helps reduce the risk of leaks, giving you confidence with every swim.

A period bikini bottom that is easy to mix, match and wear

The black period bikini bottom is a versatile option for those who prefer to use a menstrual swimwear bottom without having to buy a full set. Its colour allows you to combine it with plain, printed or colourful bikini tops, adapting your look to your preferences and making the most of the swimwear you already own.

In addition to being easy to combine, this format is practical if you want to carry a second bottom as a spare. If you are spending several hours at the beach or pool, you can keep another period bikini bottom in a waterproof bag and change when you notice moisture, discomfort or that the absorbent area is reaching its capacity.

Designed for swimming and moving comfortably

This black period bikini bottom is suitable for water activities and has a lightweight design with period protection built into the garment itself. It can be used for swimming, walking on the beach, sunbathing or taking part in activities outside the water without looking noticeably different from a regular bikini bottom.

Its medium absorbency makes it a suitable option for light or moderate flow. On heavier-flow days, it can be used as additional protection together with another menstrual product, depending on each person’s needs and preferences.

How to choose the right size

To help the bikini bottom stay properly in place while swimming, it is important to choose a size that fits the body without feeling too tight or too loose. You can use your usual underwear size as a reference or measure the widest part of your hips and compare it with the size guide.

A black period bikini bottom that is too loose may move while swimming, while a size that is too small may feel uncomfortable and restrict movement. The right fit helps keep the absorbent area in place and supports a more secure feeling in and out of the water.

Shipping for the black period bikini bottom

Free shipping from €38 and fast 24/48h delivery.

Absorption / Flow
Medium / 💧💧💧💧
Composition
85% Polyamide / 15% Elastane
Style
Bikini
Number of absorption layers
4
Front absorbent pad coverage
Medium
Back absorbent pad coverage
Medium
XIB-Pro Technology *
No ✖️
Use in sporting activities
Yes ✅
Use in first periods for girls and teenagers
Yes ✅
Post-partum / Menopause use
Yes ✅
Use for light urine leakage
Yes ✅
Main color
Black
2 Reviews
Discreto, cómodo y de buena calidad.
Verified Review. Sent by Nancy on 09/02/2026
Se nota un poco más grueso al tacto, pero puesto no molesta y no se nota.
Verified Review. Sent by Mónica Q on 24/04/2025

How do reusable period products work?

Reusable period products are designed to offer a comfortable, washable and more sustainable way to manage your period. At Libertad Menstrual, you can find different formats, including period underwear, period thongs, reusable pads, pantyliners, period bikinis and period swimwear, each one created for a specific type of use, absorbency level and moment of your cycle.

Although they all share the same basic idea —helping manage menstrual flow in a discreet and reusable way—, each product works differently. That is why it is important to check each product page, its absorbency level, coverage type and recommended use: everyday wear, night-time protection, sport, pool, beach, first periods or additional protection.

1. They absorb, protect and help maintain comfort

Reusable period garments include a technical area made from several layers. Depending on the model, these layers can help absorb menstrual flow, manage moisture, improve comfort and reduce the risk of leaks during use.

In products such as period underwear, thongs or reusable pads, the absorbent area is designed for everyday use. In period bikinis and period swimwear, protection is adapted to water activities such as the pool or beach, usually with absorbency levels aimed at light flow, spotting or additional protection.

2. Each format has a recommended use

Not all reusable period products are designed for the same purpose. Period underwear can be a practical option for everyday wear, night styles usually offer more coverage, period thongs are often designed for light flow or occasional use, and reusable pads or pantyliners can help complete your protection depending on your needs.

Period swimwear and period bikinis, on the other hand, are designed for enjoying the water during your period with a garment made specifically for the beach, pool or water activities. In these cases, always check whether the model is recommended for light flow, moderate flow or additional protection.

3. Absorbency depends on each model

Each product has its own absorbency capacity. Some models are designed for light flow, others for moderate or heavier flow, and others for spotting or the first and last days of the period. On our website, absorbency and coverage icons help you quickly understand what type of use each product is designed for.

To choose well, it is best to consider three factors: your flow level, the moment of your cycle and the activity you are planning. Choosing a product for sleeping, school, sport or swimming is not the same.

4. They are washable and reusable

One of their main advantages is that they can be washed and reused. After each use, rinse the garment with cold water, wash it according to the care instructions and let it air dry. For swim products, such as period bikinis or period swimwear, it is also advisable to rinse the garment after contact with chlorine, salt water or sunscreen.

With proper care, reusable period products can support you through many cycles, helping reduce the use of disposable products while offering a practical option for different moments of your period.

5. Comfort, discretion and less waste

Reusable period products can offer comfort, discretion and a more conscious way to manage your period. By choosing the right format for each moment —period underwear, thong, reusable pad, pantyliner, period bikini or period swimwear— it becomes easier to adapt protection to your body, routine and plans.

The key is to choose the right product according to your flow, coverage, activity and the level of protection you need at each moment.

How to choose the right absorbency level

Every body, every period and every moment of the cycle is different. That is why choosing the right absorbency level is key to finding the reusable period product that best suits your flow, routine and the type of activity you are planning.

At Libertad Menstrual, you can find different formats, including period underwear, period thongs, reusable pads, pantyliners, period bikinis and period swimwear. Each model has its own capacity, so we recommend checking each product page, absorbency icons, coverage type and recommended use.

Low absorbency

Low absorbency is suitable for light flow, spotting, the first or last days of the period, preventive use or additional protection. It is also common in period products designed for water, such as some period bikinis or period swimwear.

In models that show an equivalence, it may correspond approximately to 2 tampons. However, it is always best to check the specific capacity of each product, especially for swimwear, thongs, pantyliners or products with a more specific use.

Low absorbency for light flow in reusable period products

Medium absorbency

Medium absorbency is recommended for moderate or steadier flow, when you need more protection than low absorbency but do not need the highest-capacity styles. It can be a good option for everyday wear, school, work or daily activities.

In models that show an equivalence, it may correspond approximately to 4 tampons. It is a balanced option for those looking for comfort, discretion and intermediate absorbency for several hours of use.

Medium absorbency for moderate flow in reusable period products

High absorbency

High absorbency is designed for heavy flow, night-time use, heavier bleeding days or moments when you need more coverage and absorbency capacity. It is usually found in period underwear styles with a larger absorbent area and a more covering design.

In models that show an equivalence, it may correspond approximately to 6 tampons. For swim products, reusable pads, pantyliners or thongs, always check the specific product page, as absorbency can vary depending on the format, fabric and protective area.

High absorbency for heavy flow in reusable period products

Tips for choosing the right level

  • Choose low absorbency for light flow, spotting or the first and last days of your period.
  • Choose medium absorbency if your flow is steadier and you need balanced everyday protection.
  • Choose high absorbency for heavy flow, night-time use or moments when you prefer more coverage.
  • For period swimwear, bikinis, thongs, pantyliners and reusable pads, always check the product page because capacity can vary depending on the format.
  • If you are unsure between two levels, you can combine products depending on the moment of your cycle or use one garment as additional protection.

How to wash and care for reusable period products

Washing your reusable period products correctly helps maintain absorbency, protect technical fabrics and extend their lifespan. Although each garment may have specific care instructions, this basic routine works for most period underwear, period thongs, reusable pads, pantyliners, period bikinis and period swimwear.

1. Rinse with cold water after use

After wearing the garment, rinse it with cold water until the water runs clearer. Avoid hot water at the beginning, as it may help set stains into the fabric.

For more persistent stains, you can soak the garment in cold water for a few minutes and use a mild soap. Avoid harsh products that could damage absorbent or leak-resistant layers.

2. Hand wash or machine wash

You can wash reusable period products by hand or in the washing machine, preferably at a low temperature and always following the care label of each garment.

As a general rule, avoid fabric softener, bleach and whitening products, as they may affect absorbency, breathability and technical fabrics. To protect garments in the washing machine, you can use a laundry bag.

3. Extra care for period swimwear and bikinis

For swim products, such as period bikinis and period swimwear, it is advisable to rinse the garment after contact with chlorine, salt water, sand or sunscreen.

This helps protect the stretchy fabrics, preserve the colour and care for the integrated period protection area.

4. Always air dry

After washing, let the garment air dry in a well-ventilated place. Avoid wringing it too hard, as this may deform the fabric or damage the inner layers.

We do not recommend using a tumble dryer or placing the garment directly on radiators or other intense heat sources, as heat may affect the technical materials.

5. What to avoid

  • Do not use fabric softener, bleach or whitening products.
  • Do not start the wash with hot water.
  • Do not tumble dry.
  • Do not iron the absorbent or leak-resistant area.
  • Do not store the garment while damp; wait until it is completely dry.

Quick care summary

Rinse with cold water, wash with mild soap, avoid fabric softener and intense heat, and let the garment air dry. With these simple steps, your reusable period products can better preserve their shape, fabrics and protective performance over time.

What is XibPRO Menstrual Technology?

XibPRO Menstrual Technology is the multi-layer protection system used in reusable period products by Libertad Menstrual. It is designed to combine absorbency, comfort, breathability and a protective barrier that helps reduce the risk of leaks during use.

This technology can be found in different formats, including period underwear, period thongs, period bikinis, period swimwear, reusable pads and pantyliners. Absorbency capacity and recommended use always depend on each model, so it is important to check the specific product page.

XibPRO Menstrual Technology multi-layer protection system

How the XibPRO layer system works

XibPRO uses a structure of thin layers designed to work together. Depending on the product, these layers help maintain a drier feel, absorb menstrual flow, improve comfort and protect the garment against possible leaks.

1. Dry-Feel layer

The first layer is in contact with the skin and is designed to provide a softer, drier feel during wear. In many styles, this layer includes organic cotton and helps reduce the sensation of moisture in the intimate area.

2. Active+ layer

The Active+ layer helps guide menstrual flow towards the inner layers of the garment. Its role is to support faster absorption and help the surface feel comfortable for longer.

3. Absorb+ layer

The Absorb+ layer is responsible for retaining menstrual flow. Absorbency capacity varies depending on the product: some models are designed for light flow, others for moderate or heavier flow, and others for additional protection.

In higher-absorbency styles, the capacity may be approximately equivalent to several tampons, while swim products or lighter formats may offer lower absorbency and be recommended for spotting, light flow or the first and last days of the period.

4. Leak-Block layer

The Leak-Block layer works as a protective barrier to help reduce the risk of leaks and prevent flow from passing through to clothing. Its purpose is to provide extra security without adding unnecessary bulk to the garment.

Benefits of XibPRO technology

  • Multi-layer protection: combines absorbency, comfort and leak-resistant support in one structure.
  • Discreet design: helps integrate period protection without making the garment feel bulky.
  • Comfort during wear: its layers are designed to support movement and improve comfort.
  • Product-specific absorbency: each model offers a different capacity depending on its design, coverage and recommended use.
  • Reusable format: the garment can be washed and worn again following the care instructions.

Products with XibPRO technology

You can find XibPRO in different Libertad Menstrual products, from everyday period underwear to options for sport, night-time use, first periods, beach or pool.

Discover all Libertad Menstrual products featuring this technology in our XibPRO Technology section.

You might also like

Customers who bought this product also bought:

Product added to wishlist

To improve your browsing experience, at Libertad Menstrual we use cookies. See our PRIVACY POLICY.