Masmi

Masmi Period Underwear with triple absorption (166 g absorbency), high waist (sizes: S, M, L, XL) 1 piece.

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  • Delivery within 24 hours (PL)
  • Fast delivery within the EU: 48-72 hours

Period underwear with market-leading absorbency, made from the healthiest organic cotton with GOTS certificate, grown without pesticides, herbicides and chemical fertilizers.

Our underwear is hypoallergenic, possessing as many as 4 certificates: GOTS, FSC, VEGAN and COTTON NATURAL.

This is reusable underwear worn during menstruation, replacing pads, tampons and other intimate hygiene products for women.

  • Compared with period underwear from other manufacturers that absorb up to 50 grams of liquid, these panties have triple absorption: up to 166 g of menstrual blood.
  • Regular period underwear have one absorbent layer, while these underwear have four breathable absorbent layers from special 3D fabric, made from organic cotton, guarantee maximum absorption of the underwear.
  • Increased absorption (166 g) - this is more than 12 tampons in the super size. It guarantees comfort and safety all day or night. No stains on clothing after a whole day at work/school and on bedding in the morning.
  • Our panties have been recognized as the best underwear on the market by independent experts Allegro and other independent rankings - see here:

menstrual underwear ranking (copy link to your browser):

  1. https://allegro.pl/artykul/ranking-majtek-menstrualnych-2022-AgMwdkaYeSWnych 2022 – Allegro.pl
  2. https://rankedo.pl/majtki-menstruacyjne-ranking/

Why choose Masmi menstrual underwear?

  • 100% organic cotton with GOTS certificate - this is the healthiest material from which period underwear can be made. It prevents irritation of intimate areas, inflammations, fungal infections or chafing. The underwear is hypoallergenic.
  • Our underwear does not “crinkle” during wear, because there is no foil (polyurethane, polyester, etc.) in the absorbent layer – 100% discretion and mental comfort for you in every situation.
  • Warranty up to 100 washes without loss of absorbency! - As the only brand on the market we provide such a warranty on our underwear.
  • When following the manufacturer’s washing guidelines, Masmi underwear will retain its properties even up to 400 washes without loss of absorbency!
  • Best solution for the first periods - high absorbency and long-lasting action combined with the simplest usage compared to tampon application or pad change give girls an unprecedented level of comfort in these important days – just one pair for the whole day at school.
  • Excellent performance in extreme conditions - during training, on trips, on a plane, on a journey, during long meetings or conferences + all other life situations where changing a pad, tampon or emptying a cup could be a problem - you do not have to give up your plans!
  • They are an excellent solution for women after childbirth, with urinary incontinence, discharge and for disabled women - you save time and money with exceptional ease of use.
  • Eco-friendly for the planet - fully biodegradable, no ingredient tested on animals, do not contain superabsorbents, foil, plastics, artificial fragrances or allergenic ingredients.
  • The best economic choice among all intimate hygiene products!

Q&A

  • Is it worth buying menstrual underwear?

Among women who replaced pads, tampons or cups with menstrual underwear, opinions are very positive. Most admit that Masmi underwear performs well even on the first days of the period with heavy bleeding. About changing a pad or tampon you should remember every 3-4 hours depending on the period intensity – Menstrual underwear only needs to be replaced twice a day.We recommend buying 2 pairs of underwear – One pair we wear, the other is ready clean for change, but if you want to be sure that on these days there will always be a clean, washed pair waiting, you can get even more pairs. Optimal amount is 3 pieces.

  • With menstrual underwear, do you use a pad or tampon at the same time?

Menstrual underwear are designed to provide protection during menstruation by themselves. There is no need to wear an extra pad, but if you feel more comfortable with a pad, you can use it exactly like in normal underwear. You can also wear the underwear for extra protection during menstruation when using a tampon or menstrual cup.

  • Are menstrual underwear expensive?

Menstrual underwear are very durable and long-lasting, so their purchase is definitely economical. One pair can serve us for 3-4 years without loss of absorbency. If you follow the manufacturer’s washing and drying guidelines this period can extend to even 6 years (remember that underwear can last even longer, but their absorbency will fall slightly - this process will not be noticeable to you). The cost of buying pads or tampons over a similar period is 3 to 6 times higher (depending on the brand of pads or tampons used) than buying 2-3 pairs of underwear. In addition, there is incomparably greater comfort of using underwear due to the longer time between changes - 12 h for underwear vs 3-4 h for pads and tampons.

  • Do menstrual underwear leak?

No, menstrual underwear do not leak if used and cared for properly. However, you should monitor your body and adjust the wearing time of the underwear to your needs depending on the intensity of the period.

  • Does menstrual underwear emit a bad odor?

A bad odor may appear sometimes when you have a vaginal infection.

  • Can you feel damp in menstrual underwear?

If menstrual underwear are washed properly, they do not lose absorbency and should keep up with absorbing moisture into the absorbent layer.

tailored to your body - available in 4 sizes: S, M, L and XL

How to wash and care for the products?

  1. Wash before first use.
  2. After use, we recommend rinsing and/or soaking before washing.
  3. Can be hand washed or machine washed with the rest of the laundry or in a separate laundry bag (if you prefer).
  4. If using a washing machine, wash at a temperature no higher than 40º.
  5. For proper care, use neutral soaps. Do not use chlorine, bleach, fabric softeners, natural oils or Marseille soap, as they may affect absorbency.
  6. Do not use a dryer, as it may reduce absorbency.

As the only brand on the market we provide a guarantee of unchanged absorbency of our underwear up to 100 washes!

When following the manufacturer’s washing and drying guidelines, menstrual underwear Masmi will retain its properties up to 400 washes!

Reusable hygiene articles provide safety, high absorbency, full freedom of movement, great comfort and are also very economical.

composition:

96% certified organic cotton, 4% elastane

absorbent layer: 97% certified organic cotton, 3% PU

Hypoallergenic product, with as many as 4 certificates: GOTS, FSC, VEGAN and COTTON NATURAL.

in black

vegan-friendly product

made in Spain

NOTE: SIZES OF MENSTRUAL UNDERWEAR, DEPENDING ON THE SERIES THEY MAY DIFFER SLIGHTLY, THEREFORE IF YOUR MEASUREMENTS FALL BETWEEN TWO SIZES, E.g. S and M, WE RECOMMEND CHOOSING THE LARGER SIZE.

PRODUCT COMES IN A CARBOARD PACKAGING SECURED WITH A STICKER. UPON OPENING, FOR HYGIENE REASONS, RETURNS ARE NOT ACCEPTED.

In our store you will also find Masmi period underwear with a low rise, with double absorbency up to 120 g.

Masmi and Silver Care products differ only in the outer packaging, the product is the same. If one type is missing in the order, a representative from the other brand will be sent.

size: S, M, L, XL

Manufacturer information
Manufacturer: COHITECH COTTON HIGH TECH, S.L., Colonia La Rabeia, S/n, Balsareny Barcelona, 08-660, Spain, info@masminaturalcotton.com

Exclusion from the right of return and exchange: Intimate hygiene products such as menstrual underwear, pads, liners, tampons, menstrual cups, etc., cannot be returned or exchanged once the packaging has been opened. Legal basis: in accordance with Art. 38 of the Consumer Rights Act of 05/30/2014 and EU Directive 2011/83 of 10/25/2011: The right to withdraw from a contract concluded outside the business premises or at a distance does not apply to contracts 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. How are Masmi period underwear different from other menstrual underwear?

Masmi underwear stands out from the competition thanks to 100% organic cotton with GOTS certification, free from plastic, polyester, or synthetics, which minimizes the risk of irritation and infections (such as vulvitis, TSS), as confirmed by independent lab studies. They offer the highest absorbency (77-166 g vs 25-50 g in other brands) and guarantee absorbency for up to 100 washes (competitors max 60), without any rustling effect when worn or sitting. They are biodegradable and hypoallergenic. Allegro rankings 2022-2024 rated them the best on the market. Experience the difference at masmi.com.pl!

2. Are Masmi period underwear safe for sensitive skin?

Yes, Masmi period underwear is 100% safe for sensitive skin! Made from certified organic cotton (GOTS certified), they are hypoallergenic and free from toxins, pesticides, dioxins, chlorine, perfumes, or superabsorbents that can cause irritation or intimate infections such as vulvitis. Studies conducted by independent laboratories confirm that organic cotton minimizes the risk of allergies and disruptions to the vaginal microbiome compared to synthetic materials. Discover the comfort and safety of Masmi products – check them out at masmi.com.pl!

3. Why should you choose organic cotton over cheaper alternatives?

Organic cotton, like that used in Masmi underwear, is healthier for intimate health because it's grown without chemical pesticides and fertilizers, eliminating the risk of harmful substances entering your body—the vaginal mucosa can absorb them in just 4-8 seconds! On the other hand, synthetic materials like polymers or viscose can increase the risk of irritation, yeast infections, or even long-term issues such as endometriosis, as indicated by research from the American Endometriosis Association. Masmi offers the natural protection that cheaper products simply can't provide.

3. What does the GOTS certificate mean and why is it important?

The GOTS (Global Organic Textile Standard) certificate guarantees that Masmi underwear is made from organic cotton, produced in a way that’s safe for both the environment and your health, without toxic chemicals or heavy metals. It’s a mark of the highest safety standards—no pesticides, dioxins, or chlorine, which minimizes the risk of infections and allergies. Masmi is the only brand to use such strict criteria, making it stand out on the market. Check the details at masmi.com.pl and see for yourself how important this is for your health!

4. Are Masmi period panties cost-effective, given that their price is higher than pads?

Yes, Masmi panties are an investment that lasts for years! One pair is guaranteed to stay absorbent for up to 100 washes, which means up to 5 years (about 60 periods), while 10 packs of pads or tampons only last 10-12 periods. Thanks to absorbency ranging from 77 g to 166 g (much more than the 25-50 g offered by competitors) and no need for frequent changes, you save both time and money. It’s an economical choice in the long run.

5. Can Masmi panties help with health issues like endometriosis?

Yes, Masmi panties can support intimate health, including for those with endometriosis. Organic cotton, free from dioxins and chemicals, reduces the risk of irritation and hormonal disruptions that can worsen endometriosis symptoms—WHO studies show a link between dioxins and this condition. The breathable structure and hypoallergenic properties of organic cotton offer extra protection against infections.

6. How long can I wear Masmi period panties during my period?

Masmi panties are designed for up to 12 hours of use, thanks to absorbency from 77 g (standard) to 166 g (triple absorbency), which outperforms the competition (25-50 g). They’re perfect for day, night, or travel—no need to change every 2-3 hours like with tampons or pads, so you get exceptional comfort. Care for them as instructed (wash up to 104°F/40°C without bleach) and they’ll last for years. Learn more at masmi.com.pl!

7. Are Masmi panties eco-friendly?

Yes, Masmi panties are 100% biodegradable, thanks to organic cotton instead of plastic. They help reduce menstrual waste, which amounts to 500 billion single-use products worldwide every year. The Masmi factory uses solar panels and a closed water cycle to minimize environmental impact. Make a conscious choice—see details at masmi.com.pl!

8. How should I wash Masmi period panties to maintain their quality?

Wash Masmi panties at up to 104°F/40°C with neutral soap, avoiding bleach and tumble dryers. This guarantees up to 100 washes without losing absorbency (up to 400 with proper care). It’s simple and eco-friendly—you’ll find the instructions at masmi.com.pl. Start taking care of yourself and the planet today!

9. Do Masmi panties leak during heavy periods?

No, Masmi panties won’t leak even during heavy periods, thanks to triple absorbency (up to 166 g). That’s more than the standard 25-50 g from competitors, as confirmed by Allegro rankings from 2022-2024. Choose the right absorbency model and enjoy peace of mind—order at masmi.com.pl!

10. Where can I buy Masmi underwear and how do I use a discount?

You can buy Masmi underwear at masmi.com.pl. Discount programs are available on our website for each product. Check out our offer and start your journey with Masmi today!

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Regular price €40,95 EUR
Sale price €40,95 EUR Regular price