How does menstrual swimwear work?

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How does menstrual swimwear work?

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Swim worry-free during your period

Swimming with period swimwear

With Moodies period swimwear, you can hit the beach or dive into the pool without stress. Our swimwear is specially designed to absorb light menstrual flow and small incontinence drops. So you can swim without fear of leaks.

Handy if your period is approaching

Expect your period to start soon? Then period swimwear is extra convenient. No more worries about unexpected stains, whether you're relaxing on your towel or sitting with your feet in the water.

Choose your favorite style

We have various bottom styles that you can easily combine with your own bikini top. Prefer an all-in-one? Then go for a beautiful swimsuit that is just as comfortable.

Good fit prevents leaks

It's important that period swimwear fits snugly. Both the gusset and the outer fabric play a role in absorbing moisture and preventing leaks, so you can move freely in and around the water.

Read more about swimming and menstruation in our blog.
layer 1 - mesh

The crotch is made of a special mesh fabric that absorbs and locks in leaks and odors . This mesh fabric also has a water-repellent layer that prevents moisture from entering the outer panties. The fabric is also treated with an antibacterial wash, making it hygienic and odorless.
layer 2 - PU

The second layer is a water-repellent fabric (polyurethane) that ensures that you do not leak.
outer fabric

Our period swimwear bikini bottoms are double-lined so you can't see the gusset on the outside. This ensures your bikini feels comfortable and secure, both in and out of the water.

a period swimming costume that absorbs moisture and repels water, how is that possible?

The secret lies in the smart layers and the fit. Menstrual swimwear works through a layered system in the crotch: a thin absorbent mesh catches spotting and light flow, while a water-repellent PU layer prevents the briefs from soaking up pool or sea water. The close fit around the legs ensures that water does not flow in. Moodies menstrual swimwear is OEKO-TEX certified and PFAS-free.

  • Inside, there's a thin, fast-absorbing layer that catches spotting and light menstruation as soon as you get out of the water.
  • The outside is water-repellent, so the briefs don't soak up water and you feel dry and confident.
  • The snug fit ensures everything stays in place, without thick or visible layers.

OUR ABSORPTION LEVELS

From light to medium-heavy

light

1 tampon · 5ml

light-medium

1-2 tampons · 7ml

medium-heavy

2-3 tampons · 13ml

What is the difference between period swimwear and period underwear?

Menstrual swimwear and menstrual underwear work differently, as they are designed for different situations. Swimwear needs to keep water out, while underwear needs to absorb more fluid throughout the day.

  • Underwear has multiple absorbent layers (like terry cloth), allowing it to absorb 1–6 tampons worth of fluid depending on the model. This is ideal for daily use, even on heavier days.
  • Swimwear has one special PU layer, a thin, fast-drying absorbent layer that catches light spotting while remaining water-repellent. This prevents your briefs from soaking up water in the pool.
  • The design is different: swimwear fits more snugly around the legs to keep water out; underwear focuses on breathability and long-term absorption.

How can you swim on your period without a tampon?

You can swim without a tampon by wearing menstrual swimwear . This swimwear has a thin, absorbent layer for light flow and keeps water out, so you can move freely without the worry of leaks.

  • Both absorbencies are suitable for different phases of your period. The light absorbency is ideal for spotting or the beginning/end of your period. The medium-heavy absorbency is great for the heavier days of your period.
  • The close fit around the legs prevents water from flowing in and allows the absorbent layer to do its job.
  • Having a tougher day? Consider adding extra protection or choosing a quieter time.

Can you safely swim during your period, and does it help with pain?

Yes, you can absolutely swim during your period. Many people even find that moving in the water can alleviate cramps. It's completely safe, and using the right period product can make it even better. ;)

  • Moodies period swimwear absorbs light to moderate flow and is ideal for the beach or pool.
  • Having heavier days? Combine with a tampon or cup for extra security.
  • Listen to your body: if you experience persistent or severe pain, always consult your doctor.

frequently asked questions about period swimwear

How long can you wear period swimwear?

You can wear Moodies menstrual swimwear for over 4 hours during an average period. If you're unsure, bring an extra pair of bottoms in a storage bag, where you can also keep the used ones until you get home.
How do I wash period swimwear?

After use, rinse your Moodies menstrual swimwear immediately when you get home. If you rinse the briefs thoroughly, you don't need to wash them daily. In that case, you can choose to use a small amount of detergent and let the briefs dry completely. After 2 or 3 days, wash at a maximum of 30 degrees, do not use fabric softener, and do not tumble dry. See the washing instructions for more information.
Is there also menstrual swimwear with higher absorption?

At Moodies menstrual swimwear, we have two different absorbencies. The light-medium absorbs 7 ml, which is equivalent to 1-2 tampons. Additionally, we have the medium-heavy absorbency. These bottoms absorb 13 ml, which is equivalent to 2-3 tampons.
I'm between two sizes, which one should I choose?

With Moodies menstrual swimwear, it is important that it fits snugly around the buttocks and groin. If you are in doubt about the size, it is better to buy slightly smaller rather than slightly larger.
Does period swimwear also work in the sea?

Yes, Moodies period swimwear works both in the pool and in the sea. The water-repellent PU layer and the snug fit are designed to function in moving water. For heavier flows, it is advisable to combine with a cup or tampon.
Can I also use period swimwear for light incontinence?

Yes. Moodies menstrual swimwear is also suitable for light incontinence drops. The absorbent layer captures small amounts of fluid, both in and out of the water.
Safe fabrics and OEKO-TEX certified

The antibacterial wash uses RUCO-BAC©. This is a rigorously tested biocide used to kill bacteria. This protects the skin and mucous membranes from inflammation and infection, and prevents unpleasant odors. This wash is permanent and harmless to the skin. Moodies offers many styles of menstrual swimwear for both women and girls .

And because every period and every body is different, we recommend wearing your moodies on a relaxing day at home for the first time to experience how long they work for you.

All layers are OEKOTEX© certified, which means that the product is produced in an environmentally and human-friendly manner and therefore does not contain PFAS.

washing instructions for menstrual swimwear

to rinse

Rinse! After wearing your moodies, rinse them under the tap or take them with you in the shower before putting them in the wash. Don't soak them! Then hang them on the edge of the laundry basket until you wash them again. If you rinse them thoroughly, you won't need to wash them every time. Just do this after 2 or 3 uses.
30 degrees was

Wash at a maximum temperature of 30°C . Along with your other laundry. Use regular detergent or eco-friendly detergent, but no fabric softener (note that most laundry pods also contain fabric softener). Instead of fabric softener, you can use organic vinegar. Spin-drying is no problem.
to hang

Do not tumble dry . Hang your panties to dry. Do not tumble dry your moodies, as this can damage the technical fabrics in the gusset.
maintenance

Sometimes, after a few months (especially after a busy summer vacation 😉), your panties could use a thorough overhaul . This is also true if you occasionally notice your panties leaking more easily, or if you notice they're starting to smell a bit more.

A more thorough cleaning every three months will ensure that the Moodies last as long as possible , you can prevent unpleasant odors and everything stays hygienic and clean .
washing instructions

menstrual swimwear

- 19%
Limited time offer

period swimwear - bikini bottom with ties

$42.00 $34.00
    • $34.00 $42.00
    - 21%
    Limited time offer

    menstrual swimwear - bikini top front closure

    $39.00 $31.00
    • $31.00 $39.00
    - 20%
    Limited time offer

    menstrual swimwear - swimsuit

    $80.00 $64.00
    • $64.00 $80.00
    - 20%
    Limited time offer

    menstrual swimwear - boxer briefs

    $44.00 $35.00
    • $35.00 $44.00
    - 20%
    Limited time offer

    period swimwear - bikini bottoms

    $44.00 $35.00
    • $35.00 $44.00
    - 20%
    Limited time offer

    period swimwear - bikini bottoms

    $46.00 $37.00
    • $37.00 $46.00
    view all