Set -3% 2 x Masmi Reuse period underwear for swimming UPF 50+ / chlorine-resistant

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Masmi

Set -3% 2 x Masmi Reuse period underwear for swimming UPF 50+ / chlorine-resistant

Name: Set -3% 2 x Masmi Reuse period underwear for swimming UPF 50+ / chlorine-resistant
Brand: Masmi
Price: 45.95 EUR
Availability: InStock

€45,95 EUR

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100% of the healthiest certified organic cotton
Maximum absorbency
FREE gift with every order!

Free shipping on orders over 100 PLN
Order by 2 PM – ships the same day
Delivery within 24 hours (PL)
Fast delivery within the EU: 48-72 hours

Set -3% 2 x Masmi Reuse period underwear for swimming UPF 50+ / chlorine-resistant

Size: XS

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€45,95 EUR

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Menstrual swim panties / pool period panties function as menstrual underwear – worn during menstruation, they replace pads, tampons and other feminine hygiene products. They ensure your period doesn’t limit your physical activity or ruin your holiday plans! The absorbent insert of the menstrual bikini, which comes into contact with the intimate area, is made from the healthiest GOTS-certified organic cotton, grown without pesticides, herbicides or chemical fertilizers. The outer fabric of the bikini is resistant to chlorine and salt water – tested for this purpose in accordance with ISO 105.

Why choose the Masmi menstrual swim bikini?

100% GOTS-certified organic cotton in the 3D absorbent layer – no irritation of intimate areas, no inflammation, fungal infections or chafing.
Maximum absorbency (up to 77 g) – that’s more than 6 super-size tampons. It guarantees comfort and safety throughout a full day at the beach or pool. You don’t have to give up your plans!
The bikini provides high protection against UV radiation at UPF 50+ helping to reduce the risk of sunburn, premature skin ageing and cancer.
The outer fabric of the panties is resistant to chlorine and salt water – it has been tested for this purpose in accordance with ISO 105.
Our swim panties don’t “rustle” when worn, because the absorbent layer contains no film (polyurethane, polyester, etc.) – 100% discretion and comfort in every situation.
Guaranteed up to 100 washes without loss of absorbency! – We are the only brand on the market to offer such a guarantee for our swim bikini. When you follow the manufacturer’s washing instructions, Masmi swim panties will retain their properties for up to 400 washes without losing absorbency!
3D absorbent layer the swim briefs prevents leaks, ensuring maximum safety and protection.
They are an excellent solution for women with urinary incontinence – you can still freely enjoy physical activity.
They are planet-friendly – fully biodegradable, no component of the product has been tested on animals, does not contain superabsorbents, films, plastics, artificial fragrances or allergenic ingredients.

This product is the bottom of a bikini set – you can choose any top you like to match.

Q&A:

Do you need to use a pad or tampon together with period bikini bottoms?

Menstrual swim briefs are designed to provide protection on their own during your period. There is no need to wear an additional pad or insert a tampon, but if you feel you’d be more comfortable, you can use extra protection.

Is menstrual bikini underwear expensive?

Menstrual swim panties are very efficient and durable, so buying them is definitely economical. They can last us even 3–4 years without any loss of absorbency. If you follow the manufacturer’s washing and drying instructions, this period can be as long as 6 years (remember that the bikini can last even longer, but its absorbency will decrease slightly – this process will not be noticeable to you).

Does menstrual bikini underwear leak?

No, menstrual bikini bottoms do not leak as long as they are used and cared for correctly. However, you should listen to your body and adjust how long you wear the panties to your needs, depending on how heavy your period is.

Does menstrual bikini underwear develop an unpleasant odour?

An unpleasant odour can sometimes appear when you have an intimate infection.

Do you feel menstrual blood moisture in menstrual bikini bottoms?

If menstrual bikini underwear is washed properly, it doesn’t lose absorbency and keeps up with absorbing blood into the absorbent layer.

shaped to your body – available in 4 sizes: XS, S, M and L

How to wash and care for period bikini bottoms?

Wash before first use.
After use, we recommend rinsing and/or allowing to soak before washing.
Can be hand or machine washed with the rest of your laundry or in a separate laundry bag (if you prefer).
If using a washing machine, wash at a temperature no higher than 40º.
For proper care, we recommend using neutral soaps. Avoid using chlorine, bleach, fabric softeners, natural oils, or Marseille soap, as they may affect absorption.
Do not use a dryer to dry your laundry as this may reduce its absorbency.

We guarantee unchanged absorbency of our menstrual swim bikini for up to 100 washes! When you follow the manufacturer’s washing and drying instructions, Masmi menstrual swim bikini will retain its properties for up to 400 washes.

composition:

outer layer: 80% recycled polyamide, 20% elastane

Bottom layer: 82% recycled polyamide, 18% elastane

absorbent layer: 94% certified organic cotton, 6% PU

A hypoallergenic product with 4 certificates: GOTS, FSC, VEGAN and COTTON NATURAL.

in black

product suitable for vegans

made in Spain

NOTE: Sizing of menstrual underwear may vary slightly between production runs, so if your measurements are between two sizes, e.g. S and M, we recommend choosing the smaller size.

THE PRODUCT IS IN A CARDBOARD PACKAGING SECURELY SECURED WITH A STICKER. ONCE OPENED, FOR HYGIENE REASONS, RETURNS ARE NOT ACCEPTED.

Masmi and Silver Care products differ only in the outer packaging, the product itself is identical. If one brand is unavailable in your order, we will send the equivalent from the other brand.

Size: XS, S, M, L

Exclusion from the right of return and exchange: Intimate hygiene products such as period panties, pads, liners, tampons, menstrual cups, etc., cannot be returned or exchanged once the packaging has been opened. Legal basis: pursuant to Art. 38 of the Consumer Rights Act of 30.05.2014 and EU Directive 2011/83 of 25.10.2011: The right to withdraw from an off-premises or distance contract does not apply to a contract for the supply of sealed goods which are not suitable for return due to health protection or hygiene reasons and were unsealed after delivery.

1. Why choose Masmi menstrual swim bikini instead of synthetic alternatives?

Masmi menstrual bikini, made with a 100% organic cotton 3D absorbent layer, is a healthier option for intimate health compared to synthetic materials. A WHO report indicates that over 75% of conventional hygiene products contain toxins like glyphosate, which can cause irritation or infections. Masmi organic cotton, free from pesticides and dioxins, minimizes this risk, and its breathable structure reduces moisture, helping prevent issues such as vulvitis, according to gynecologists. Enjoy worry-free time by the water - check Masmi at masmi.com.pl!

2. How does Masmi menstrual swim bikini differ from other menstrual swim underwear?

Masmi menstrual bikini stands out with a 100% GOTS-certified organic cotton absorbent layer (77 g absorbency), unlike competitors that use synthetics. It is tested to ISO 105 standards – resistant to chlorine and salt water, with UPF 50+ UV protection, ensuring safety while swimming and sunbathing. Other swim underwear often lose absorbency after 60 washes, while Masmi guarantees stable absorbency up to 100 washes. Choose unique quality - check at masmi.com.pl!

3. Is Masmi menstrual swim bikini safe for sensitive skin?

Yes! Masmi bikini is hypoallergenic, made with GOTS-certified organic cotton in the absorbent layer, free from chemicals, perfumes or synthetics that can trigger allergies or irritation. Studies show natural materials reduce the risk of vaginal microbiome disturbances, and gynecologists confirm their safety for sensitive skin. Additionally, the absence of films (polyurethane, polyester, etc.) in the absorbent layer eliminates the "plastic" rustling effect. Experience the comfort - visit masmi.com.pl!

4. What does the GOTS certificate mean and why is it important when choosing menstrual swimwear?

The GOTS (Global Organic Textile Standard) certificate ensures that the cotton in Masmi bikini comes from organic farming without pesticides or herbicides, and that production is free from toxins like dioxins or chlorine, which studies indicate can enter the bloodstream in 4–8 seconds. This means safety for the body and the environment, with biodegradable materials. By choosing Masmi, you care for your health and the planet!

5. Is Masmi menstrual swim bikini cost-effective in the long run?

Yes! Although the initial price (approx. 104 zł) may be higher than regular swimwear, Masmi bikini is an investment for years. With 77 g absorbency (about 1/4 cup) and durability up to 400 washes (100-wash guarantee), it can last about 5 years (approx. 60 periods), while 10 packs of disposable products cost around 200–300 zł for the same period. You save money and reduce waste - choose the economical solution with Masmi!

6. How does Masmi menstrual swim bikini support intimate health during vacations?

Masmi menstrual swim bikini supports intimate health thanks to organic cotton free from toxins like glyphosate, which can worsen infections, as WHO confirms. The absence of synthetics reduces the risk of TSS and irritation of intimate areas. ISO 105 testing and UPF 50+ protection add safety. Take care of yourself on holiday!

7. How to care for Masmi menstrual swim bikini so it lasts as long as possible?

Care is simple: wash up to 40°C with neutral soap, no bleach or tumble drying. Rinse before first use, and after swimming rinse in fresh water to remove salt or chlorine. With proper care, Masmi bikini will retain absorbency and shape for up to 400 washes. Start your holiday adventure with Masmi - visit masmi.com.pl!

8. Does menstrual blood leak into the water when swimming in a pool or the sea?

No, menstrual blood does not leak into the water, here’s why:

• Special construction and absorbent layers

Menstrual bikini is made from special materials where:

• The absorbent layer retains blood and moisture inside the fabric

• The outer layer is waterproof, preventing leakage to the outside

• Physics at work

When submerged in water hydrostatic pressure acts, which:

• Makes it harder for fluids to flow from the vagina to the outside

• Can temporarily reduce bleeding because water pressure on the body slightly "pushes back" the outflow of blood

• Surface tension of liquids

• Water: has high surface tension (about 72 mN/m at 20°C), which makes it form drops and harder to penetrate materials

• Menstrual blood: has lower surface tension due to proteins and lipids, so it more readily soaks into the absorbent layer

• A snug fit

Menstrual bikini are designed to fit closely to the body, especially around the groin and buttocks. This reduces:

• The chance of blood flowing out

• Water getting inside

Blood does not flow freely underwater. It’s useful to know that menstrual blood doesn’t "flow" continuously — it comes in waves or drops, often only when changing position or during uterine contractions. During bathing these factors are reduced, so less blood reaches the vaginal canal.

9. Does Masmi menstrual bikini absorb water while swimming?

Masmi menstrual swim bikini does not absorb water while swimming (or absorbs only minimally), because it is made with waterproof materials that prevent outside water from reaching the absorbent layer.

How exactly does it work?

• Outer layer – waterproof. This part acts as a barrier that prevents water from entering

• Absorbent layer – inner. Designed to absorb menstrual blood, not water. It is protected, so it doesn’t have direct contact with water

• Good fit. Close contact with the body prevents "pumping" water inside while swimming

10. Why does menstrual bikini absorb blood yet can be washed?

The answer lies in the special multi-layer construction and the difference between water and menstrual blood.

• Inner absorbent layer – made of organic cotton, absorbs blood and mucus, but does not contact water during swimming

• Movement and pressure during washing – mechanical action, warm water and detergent break down proteins and stains, enabling the removal of blood

• Absorptive properties – the material is designed to absorb thicker fluids (blood), not thin fluids like water

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