Masmi

Masmi Period Underwear with double absorption (120 g absorbency), low rise (sizes: S, M, L and XL) 1 piece.

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  • Free shipping on orders over 100 PLN
  • Order by 2:00 PM - same day shipping
  • Delivery within 24 hours (PL)
  • Fast delivery within the EU: 48-72 hours

Period underwear with the highest absorbency on the market, made entirely from the healthiest organic cotton with a GOTS certificate, grown without pesticides, herbicides and chemical fertilizers.

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

It 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 underwear have double absorbency: as much as 120 g of menstrual blood.
  • Ordinary period underwear have one absorbent layer, while in these underwear four breathable absorbent layers from a special 3D fabric, made from organic cotton, guarantee maximum absorbency of the underwear.
  • Increased absorbency (120 g) - that is more than 8 tampons in the super size. It guarantees comfort and safety for the whole day or night. No marks on clothes after a whole day at work/school and on bedding in the morning.
  • Our underwear has been recognized as the best underpants on the market by independent experts Allegro and other independent rankings - see here:

menstrual underwear ranking (copy link to browser):

  1. https://allegro.pl/artykul/ranking-majtek-menstruacyjnych-2024–AgMwdkaYeSW
  2. https://rankedo.pl/majtki-menstruacyjne-ranking/
  3. https://terdeals.com/pl/ranking/1965/top-5-majtek-menstruacyjnych

Why choose Masmi menstrual underwear?

  • 100% organic cotton with a GOTS certificate - to the healthiest material from which period underwear can be sewn. This means no irritation of intimate areas, inflammations, fungal infections or chafing. The underwear is hypoallergenic.
  • Our underwear does not “crinkle” when worn, because they do not contain foil (polyurethane, polyester, etc.) in the absorbent layer - 100% discretion and peace of mind for you in any situation.
  • 100 washes guarantee without loss of absorbency! - As the only company on the market we give such a guarantee for our underwear. When following the manufacturer’s washing recommendations, 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 performance combined with the simplest use vs tampon application or pad change give girls unparalleled comfort in these important days – just one pair for all day at school.
  • Exceptionally reliable in extreme conditions during training, on trips, on a plane, while traveling, during long meetings or conferences + all other life situations where changing a pad, tampon or emptying a cup could be a problem - you don’t have to give up your plans!
  • They are an excellent solution for women after childbirth, with urinary incontinence, discharge and for women with disabilities - you save time and money with unrivaled comfort of use.
  • Planet-friendly fully biodegradable, no product component was tested on animals, they do not contain superabsorbents, films, plastics, artificial fragrance additives or allergenic ingredients.
  • The best economical choice among all intimate hygiene products!

Q&A

  • Is it worth buying menstrual underwear?

Among women who swapped pads, tampons or cups for menstrual underwear, opinions are very positive. Most admit that Masmi underwear performs well even during the first days of a heavy period. Pad or tampon change should be done every 3-4 hours depending on period intensity. Menstrual underwear need to be changed only 2 times a day. We recommend buying 2 pairs. In one we walk, the other is ready clean for change, but if you want to be sure that on these days there will always be a washed and clean pair waiting, you can purchase even more pairs. The optimal amount is 3 pieces.

  • Do you wear a pad or tampon at the same time with menstrual underwear?

Menstrual underwear are designed to provide protection on their own during menstruation. There is no need to wear an additional pad, but if you feel you will be more comfortable with a pad, you can wear it just like in normal underwear. You can also wear the underwear for extra protection during menstruation when you use a tampon or menstrual cup.

  • Are menstrual underwear expensive?

Menstrual underwear are very efficient and durable, so their purchase is definitely economical. One pair can serve us 3 - 4 years without loss of absorbency. If you follow the manufacturer’s washing and drying instructions, this period can extend to even 6 years (remember that underwear can serve even longer, but their absorbency will decrease 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 an 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, provided they are 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.

  • Do menstrual underwear emit a bad smell?

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

  • Do you feel moisture 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 washing bag (if you prefer).
  4. When using a washing machine, wash at a temperature not higher than 40º.
  5. For proper care, it is recommended to use neutral soaps. Do not use chlorine, bleaches, 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 offer a guarantee of unchanged absorbency of our underwear up to 100 washes!

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

Reusable sanitary products ensure safety, high absorbency, full freedom of movement, great comfort and at the same time are 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, MAY VARY SLIGHTLY, THEREFORE IF YOUR MEASUREMENTS ARE BETWEEN TWO SIZES, E.g., S and M, WE RECOMMEND CHOOSING THE LARGER SIZE.

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

If your periods are very heavy and you need even greater protection, we propose Masmi period underwear with a high rise and triple absorbency up to 166 g.

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

Size: L, M, S, XL

Return and exchange exclusion: Intimate hygiene products such as menstrual underwear, sanitary pads with wings, panty liners, tampons, menstrual cups, etc., once the packaging has been opened, are not eligible for return or exchange. 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 of withdrawal from a contract concluded away from business premises or at a distance does not apply to contracts where the subject of the supply is goods delivered in sealed packaging which cannot be returned for health protection or hygiene reasons if the packaging has been opened 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 €27,95 EUR
Sale price €27,95 EUR Regular price