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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!

Create my customized pack
Sisters Republic UK

What should 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 30 days! And if you're not convinced, we'll give you your money back, no questions asked (but we're sure you'll love it 😎)!

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Discover our teenagers' 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 the 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 pads saved

That's right! Just one pair of our panties can save you 2,275 tampons or pads in 7 years: that's 5 pads per day over 5 days of menstruation, 13 times a year (365/28 = 13) times 7 years = 2,275. Bluffing, isn't it 😱? Of course, for a full cycle with our panties, you need several panties, but this calculation just serves to give an order of magnitude of the savings we can make for ourselves and the planet by using our menstrual panties.

why choose the 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 pads saved

Read more

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 your 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).

How long will delivery take?

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 for purchases over £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 pads* (over 7 years). So menstrual pants really do save you 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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Sisters Republic Period Panties : just like normal underwear but better

Our period underwear will help you forget you even have your period. Lightweight, odourless, ultra-absorbent and leak-proof thanks to a thin waterproof layer, you can wear them just like you would any other underwear. And with a hipster cut and pretty detailing, it looks just like your normal underwear. Whether you prefer a bikini cut, hipsters or boyshorts, there is something for every style and every outfit, from your most sexy to your most sporty. With our menstrual panties, you will feel pretty, light, comfortable and worry-free. all day and all night . Choose the type of design you like most, the size and the flow level that suits you and test our new hygienic protection for all women. This is the product you need to test out for your menstrual cycle!

Good value and environmentally-friendly period underwear

No more tampons and sanitary pads that just get thrown away every month. With Sisters Republic period underwear, you save money AND the environment every month. Zero waste - well, almost - as our period underwear is washable and can be reused for years and years. To make sure your underwear lasts, just rinse them with water right after use, then machine wash at 30°C with your usual load and let them air dry. Feel free to use a laundry net as extra protection if you wish, but its not essential. Your period underwear is mainly made of a nylon/elastane blend, a soft and resistant material often used for sportswear.

Environmentally friendly manufacture, kind to your body

The importance of intimate hygiene, feminine hygiene and hygienic protection is at the heart of what we do so all fabrics used in the making of our period underwear are OEKO-TEX standard 100 certified (the same standard used for baby clothes), which means that all our underwear is guaranteed to be free of any harmful substances or additives, both for your health and the health of the environment. So, you can feel good on both counts! It's important to us that you know what you are getting when it comes to underwear, which is often not the case with certain disposable period protection (such as tampons and pads) which have questionable components that can sometimes be responsible for irritation or even be risky for your health (just think about toxic shock, which affected 23 women in 2017, a number that has been steadily increasing in France since 1990).

Change your underwear to match your mood and your flow

Whatever your menstrual cycle looks like, whether you have a light, average or heavy flow, whether you are at the beginning, middle or end of your period, whether you want extra protection because your current method doesn't cut it, or you just want to try something different, Sisters Republic has the period underwear you need. Each of our styles comes in three levels of absorption to adapt to each woman's flow and in all sizes! So if you want to wear our skimpier bikini style at the beginning of your cycle and not worry about leaking, or our boyshorts for sports without feeling any discomfort, you can!

Multi-purpose underwear for any situation

Of course, our washable absorbent underwear can also be used for heavy discharge and mild incontinence. Use them in the same way as you would for your period, except don't worry about rinsing with water cold right after use - you can just throw them in the washing machine as they are.
With Sisters Republic, you get 100% effective, comfortable period underwear that is practical, environmentally friendly and sustainable! Choose your size, the level of absorption needed (light, medium or super) and wear underwear that truly goes with your flow!

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