Menstrual swimwear
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FREE DELIVERY FOR ORDERS ABOVE £34 (in the UK) 😍 No customs duties 😍

STUDENTS ? -15% DISCOUNT ALL YEAR ROUND Read more

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Compose your pack

Compose your pack

Haven't found your ideal pack? Create your own! Assemble several models by mixing sizes, flows and styles of your choice and save money!

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Sisters Republic UK

What can I put in my pack?

If you want a pack that covers the entire duration of your period, so you can rest easy for 5 to 7 years, you can either put together a pack of 3 or 4 if you want to wash your panties during your period, or a pack of 7/8 if you want to wash them only at the end of your period. In the latter case, we recommend 2/3 pairs of SUPER absorbent panties, 3 pairs of MEDIUM absorbent panties and one pair of LIGHT absorbent panties. For night-time wear, the Boxer shape is ideal, as you can sleep with just a T-Shirt on top, as it covers like a pair of shorts!

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Test it for real
BEFORE YOU BUY?

We understand that it's safer to try before you buy. That's why we're offering you the chance to test our panties for 60 days! And, if you're not convinced, we'll give you your money back, no questions asked (but we're convinced you'll love it 😎)!

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Discover our teen collection

Ultra-comfortable models in organic cotton ranging from 10 years to size M.

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Are you a student? Save 15% all year round

Living serenely with your period shouldn't be a matter of budget 😋

why choose sisters ?

Sisters Republic UK

Free delivery from £34

The Sisters will deliver to your home for free within 48 to 72 hours for orders over £34! Offer only valid in U.K. For all delivery details and conditions, plese consult the "Payment and delivery" section.
Sisters Republic UK

30 days to change your mind

Did you order the wrong size? Or perhaps the wrong style? Did you just change your mind? Don't panic! With Sisters Republic, you have the option to return your item(s) within 30 days. To be sure your return is accepted, please make sure you comply with all the terms and conditions listed on the "Returns and Refunds" page.
Sisters Republic UK

Made with ORGANIC cotton

All our fabrics, laces and elastics are either certified organic cotton or OEKO-TEX standard 100 (the same as for newborns). They are therefore guaranteed to be free of any substances that are harmful to the body and the environment.
Sisters Republic UK

2,275 tampons saved

A single pair of Sisters Republic panties lasts from 5 to 7 years if you take good care of them. And in 7 years you'll have saved 2275 tampons: 5 tampons/d over 5d of periods, 13 times in the year (365/28 = 13) over 7 years = 2275. Ain't life grand 🌞? Obviously, you need several panties for one cycle, but this is just to give you an idea of the savings you can make for your wallet and for the planet.

why choose sisters ?

Sisters Republic UK

Free delivery from £34

Read more
Sisters Republic UK

30 days to change your mind

Read more
Sisters Republic UK

Made with ORGANIC cotton

Read more
Sisters Republic UK

2,275 tampons saved

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over 200,000 satisfied customers

the menstrual guide

Is it hygienic to wear period panties for 12 hours at a time?

Yes, because the fabrics used in Sisters Republic menstrual lingerie have been selected for their sanitary properties. Bamboo fiber is even a natural antibacterial. Only breathable organic and Oeko-Tex fabrics are used in our panties. Even after 12 hours, the pants remain hygienic and odorless.

Do I have to change my panties during the day?

Because we know that changing panties during the day isn't very practical (you have to isolate yourself, take off your pants, etc.). Our period panties can be worn for up to 12 hours without leaking, smelling or feeling damp, so it's not necessarily necessary to change them during the day. However, if you have a hemorrhagic flow and feel the need to alter your panties in the middle of the day, our Mia panties can be unzipped at the sides, so you can remove them without taking off your shoes or pants.

Can I use my Sister Republic panties during sport?

Yes, your Sisters Republic panties are ideal for protecting you during sport because, unlike sanitary towels which can slip or fold, the panties-and therefore the absorbent part integrated into them-always stay securely in place. All our models are perfectly suited to sporting activities. However, we particularly recommend the sports boxer, as it's really interlocking and will follow your every move perfectly.

Is it hygienic to soak in your own blood all day?

Firstly, contrary to popular belief, you don't soak in your own blood, because the 1st layer of fabric is breathable and dries very quickly. The airy weave allows liquid to pass quickly through the inside of the panty, leaving a dry feeling on the surface. The liquid is therefore directed, captured and retained by the absorbent fabric underneath, at the heart of the panty. Finally, unlike internal protection such as cups, tampons or menstrual sponges, period panties let the blood flow freely, so it doesn't stagnate in the vagina, which is the main cause of bacterial proliferation (and therefore of the very dangerous Toxic Shock Syndrome).

What are the delivery times?

Our panties are shipped directly from our French warehouses. Home delivery generally takes 24 to 72 hours and is free for orders over £80 (in mainland France). Delivery to a "point relais" can take an additional 24 to 48 hours, and is free from a purchase of £40 (in mainland France). When you place your order and select your shipping method, you'll be given an estimated delivery date.

Aren't menstrual pants more expensive than disposable sanitary pads?

It's true that it's an investment at the outset, but unlike other sanitary protection such as pads or tampons, menstrual panties are reusable and can last up to 7 years. A single pair of panties can replace 2275 tampons* (over 7 years). So menstrual pants really do save money in the medium term (* disposable protection saved ⇒ 5 tampons a day over 5 days of menstruation, 13 times a year (365/28 = 13) over 7 years = 2275). What's more, you'll find discounted packs in the store (-10% for purchases of 3 or more products, -15% for purchases of 5 or more products and -20% for purchases of 7 or more products), enabling you to place "group" orders, mixing different sizes and absorbency in the same basket.

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Trade in your shorts and pareos for a menstrual swimsuit

No need to hide at the beach or pool! When it's hot and you want to cool off a bit, your towel or tampon swells up and quickly becomes a reservoir of water between your legs. Those days are over thanks to Sisters Republic menstrual swimwear. Our swimwear is so thin it's inconspicuous. No need to wear shorts or a sarong all day. Whether you're planning a boat trip, a pool party or a sunbathing session at the beach, your swimsuit will ensure your comfort and serenity.

Personalize your rules swimsuit

We have chosen to manufacture swimwear with a timeless cut that suits all body shapes.

Which color and variant?

Choose your favorite color from the range of available models. The black high-waisted Naïa model is trimmed in gold for an extra touch of elegance. The Ariel bikini bottom is pinched by removable bows on each side. So you can choose to wear a lower cut or a higher-coverage bottom, depending on your mood of the day. The triangle swimsuit top has a removable bow to add a girly touch to your swimsuit if you wish. Finally, the shells are not sewn on. So you can remove them if you don't need them.

What level of absorption?

Depending on your flow and the period of your cycle, you may prefer the Light or Medium level. The Light is useful at the beginning and end of your period, or for moderate flow. It can also hold back spotting or white discharge. You can stroll along the beach and swim with it. Medium can be used for moderate flow. Ideal for sunbathing or strolling along the water's edge. However, we don't recommend swimming with it, as the absorbent fabric could become waterlogged and take a long time to dry.

A quality menstrual bikini

Our swimwear rules are designed to bring comfort and serenity. We want you to stay dry while playing beach volleyball, sunbathing on your mattress, reading under your parasol or even taking a dip. That's why we've chosen the most comfortable, health-friendly fabrics. 95% of the inner lining of our swimsuits is made from organic cotton. The outer part of the jersey is made of microfiber fabric, the same as that regularly used by sportswear brands. All our jersey fabrics are either organic cotton or OEKO-TEX standard 10, to avoid the health and skin problems that can arise from contact with materials coated with toxic substances. All our models are UV-resistant to avoid the nasty surprise of a hidden sunburn after your moment of relaxation. They are also resistant to chlorine, oils and sun creams.

Choosing my menstrual swimsuit

Our swimsuits have revealed all their secrets, and now you can choose your favorite among our models. Several colors, removable bows, slim briefs and quality fabrics are just some of the criteria that make them stylish and very pleasant to wear.

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