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!
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!
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 😎)!
Discover our teenagers' collection
Ultra-comfortable models in organic cotton ranging from 10 years to size M.
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?
Free delivery from £34The 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.
60 days to change your mindDid 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 60 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.
Made with ORGANIC cottonAll 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.
2,275 pads savedThat'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?
Free delivery from £34
60 days to change your mind
Made with ORGANIC cotton
2,275 pads saved
over 200,000 satisfied customers.
It’s a whole new lifestyle…
I only got the period underwear recently, so my experience is not a long term one yet, but I absolutely love them! I genuinely feel like a whole new person during my period, because it feels so much better than everything else. I can move without feeling like I'm gonna leak or everything falling out of place, I feel light, and my mind is a lot calmer.
Best choice ever!
"I totally recommend them! I had been wanting to try "period panties" for some time but wanted to make sure to get the right one for me and now I am sure I made the right choice! So far so good, I really like Sisters Republic pants because they are super confi, discreet and girly-like. I bought 3 of them and I know it can be pricey enough...but I really think it is worth it as the quality is really good and they are so easy to clean. But most importantly, I like them because I they are environmentally friendly and I know I am contributing to less use of pads and tampons that are toxic for the planet..."
"I was afraid about the size but fits perfectly and nice looking panties. It’s best to buy 3 panties directly as it takes time to dry after cleaning (at least 1,5 day) It’s a new organisation that’s really interesting once we have it as it allows not to get scared to be out of protection. I found it easy to rince and clean."
Nice work !
"The Sisters Republic departure promise is clearly being kept. Comfortable, very absorbent and invisible! It is a great alternative to tampons or napkins, more hygienic and more ecological! I highly recommend the Republican Sisters panties which are really great!"
It’s the ecology. Period.
"I bought these for my daughters who are scouts. Not only are they helping the planet (as girl scouts should) but they also enjoy a new found comfort and ease during their periods. So happy that we are finally evolving from pads directly to panties. Thank you Sisters!"
Comfy and reliable
When i have my period, all i need is comfy and secure. My new panties Sisters Republic are just like that : have my back for 24h hours (never tried longer), very comfy and cute as hell.
Top for the night
“I only use them at night for the moment because I haven't dared to leave all day with, but really what happiness !! no need to stress anymore because of the tampon that we leave too long at night or to have the diaper effect with a maxi night towel. Now I just put on my comfortable panties and go to sleep! “
Very happy with the panty.
"The Panty is comfortable and looks also nice. I use it for the beginning and end of my period. This is working very good and I am using less tampon and other regular period stuff. I am very happy with it and going to buy another one."
Cannot change once adopted
"So I have been a fan of the cup for several years, especially out of ecological conviction. So I naturally wanted to test the Sisters Republic period panties for the same reasons and I admit that I am more than convinced because, even if I had learned to organize myself with the cup, the real plus for me of these panties that's the practical side, no need for a sink nearby, no need for sterilization or anything. I put on my panties in the morning and rinse them at night and run a machine directly with my laundry. I feel that my cup will often stay in the cupboard!"
I love my new period shorts!
"I love my new period shorts! I've been looking for shorts because there aren't that many shops where ypu can buy shorts, it's bikini most of the time. I bought 2 medium absorbant & 2 super absorbant and both work really well, I already tested them! Leakproof, comfy, good fit!"
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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