Customize pack

Size guide

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To choose the right size, measure your pelvis (at the level of the hip bones, see diagram opposite) and refer to the chart below:

Your pelvis
size (cm)
Size
internationnal
Size EU Size IT Size UK
76-78 10/11 ans 10/11 yrs 10/11 anni 10/11 yrs
79-81 2XS・12 yrs 32 38 6
82-86 XS・14 yrs 34 40 8
87-91 S・16 yrs 36 42 10
92-96 M・18 yrs 38 44 12
97-101 L 40 46 14
102-106 XL 42 48 16
107-111 2XL 44 50 18
112-116 3XL 46 52 20
117-121 4XL 48 54 22

Top

Which absorption to choose?

Our period pants are available in 3 levels of anti-leak absorption, so you always have the right underwear for your flow.

sisters-republic-uk

LIGHT

Equivalent :

  • 1 to 1,5 pads (10ml)
  • 1 towel
  • 0.5 cup

sisters-republic-uk

MEDIUM

Equivalent :

  • 2 pads (15ml)
  • 2 towels
  • 1 cup

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SUPER

Equivalent :

  • 3 pads (20ml)
  • 3 towels
  • 2 cup

ESSAYER AVANT D'ACHETER

30 JOURS POUR ESSAYER AVANT D’ACHETER

1 - Choisis tes articles

Ajoute au panier tes articles dans la limite de 500€. Tu peux les essayer chez toi sans avancer d’argent.

2 - Sélectionne essayer avant d’acheter

Sélectionne Elyn au moment de finaliser ta commande à l’étape du paiement. Entre tes coordonnées comme pour un paiement classique, mais aucune inquiétude tu ne sera pas débité(e)*.

3 - Essaies tes articles à la maison

Profite de 30 jours après la réception de ta commande pour te décider et pour nous faire part de ton choix. Tu ne seras ensuite uniquement débité(e) des articles que tu souhaites garder. Tu as même la possibilité d’essayer une culotte gratuitement en conditions réelles pendant 30 jours. Ce n’est valable uniquement que pour ton tout premier achat et cette offre n’est valable que sur une seule culotte déjà portée. La ou les autres culottes doivent être essayées par dessus tes sous-vêtements.

*hors frais de livraison si applicable.

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product(s)

Filtres

 
 
BESTSELLER
tissu-bio
Light Medium Super

Sidonie
Bikini

£27.50

Description

Pretty bikini-cut period knickers with a high leg, pretty lace and mesh detailing. Pretty and sexy but still comfortable, this is THE underwear you need to feel beautiful and free, even during your period!  Use on its own for normal to heavy periods or in conjunction with other sanitary protection (cup or tampon, for example) for very heavy flows. It Can also be used in cas... En savoir plus
Size Size guide
Absorption Which absorption to choose?
 
 
BESTSELLER
tissu-bio
Medium Light Super

Colette
Hipsters

£27.50

Description

Pretty period knickers in a classic cut offering good coverage across the buttocks and hips. If you are looking for something comfortable and flattering, these are the ones for you! Underwear that doesn't ride up and has pretty detailing around the waist to make sure you feel great all the way through your period. Use on its own for normal to heavy periods or in conjunction... En savoir plus
Size Size guide
Absorption Which absorption to choose?
 
 
BESTSELLER
tissu-bio
Light Medium Super

Description

Our boy short period underwear has a wide elastic waistband for maximum comfort. There's no cutting into the skin, so you can go ahead and wear even your tightest clothes. Great for those active days (sport, travel, trips...) or for wearing at night, keeping you perfectly protected and totally comfortable no matter what you are up to. Use on its own for normal to heavy peri... En savoir plus
Taille
Absorption Which absorption to choose?
couleur
Light Medium Super

“Under
maintenance” Hipsters

£27.50

Description

Classically cut menstrual knickers that cover the buttocks and hips well. Comfortable and snug fitting, finally knickers that don't bunch up in your buttocks! Its "Under Maintenance" slogan announces in a fun and subtle way that there is work in progress underneath ;) It's THE perfect good mood underwear for a relaxed period. Use alone or with a tampon or pad in case of heav... En savoir plus
Size Size guide
Absorption Which absorption to choose?
 
 
BESTSELLER
tissu-bio
Light Medium Super

“Tonight”
Hipsters

£27.50

Description

This classic cut of period knickers gives you good coverage across your buttocks and hips. It's comfortable and snug fit also means you don't have to worry about it riding up. With a cheeky message on the waistline, this underwear does not give any false promises! Use alone if you have a normal to h eavy period or in conjunction with other sanitary protection (cup or tampon ... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Light Medium Super

“Do
not enter” Hipsters

£27.50

Description

Classically cut menstrual briefs that cover the buttocks and hips well. Comfortable and snug-fitting, at last some panties that don't bunch up in your buttocks! With a pink "Do not enter" cheeky message, these are your good mood knickers which bring a touch of colour :) Use alone or with a tampon or pad in case of heavy flow. It Can also be used for vaginal discharge or mi... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Light Medium Super

Shorty
Frenchy

£24.90

Description

With tri-coloured elastic at the waist, the Frenchy boyshort is the preppy chic French vibe embodied. Available in two colours - grey or black -  these  knickers are great for all occasions and their boyshort cut provides coverage and security against leaks. Made from certified organic cotton fabric, which is both soft and stretchy, these shorts are the ideal period knicker... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Color
Light Medium Super

Charlotte
knickers

£24.90

Description

Charlotte is the friend you can rely on, the perfect knickers with a classic and comfortable cut, the one you can always count on!  With thin black and white stripes, this underwear gives off all the cute vibes! You could almost mistake them for normal underwear, except that inside they have an absorbent part that soaks up any menstrual flow. Made from soft  certified organi... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Light Medium Super

Description

These  knickers have Rock'n Roll vibes and are unnoticeable under clothes. The cut gives coverage whilst still being comfortable. As for its "tattoos", the designs are embroidered with gold thread. Choose from 3 different designs: an eye, a heart and a lightning bolt. Let's rock! Our knickers offer up to 12 hours of absorption without leaking, smelling or feeling damp, so t... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Style
Light Medium Super

Chloe

£32.00

Description

The chill, but girly menstrual shorty is here! A comfortable cut with good coverage and a glittery elastic for a touch of style, it's the best way to accompany your period gently! Made with organic cotton for maximum softness and flexibility in your movements. It is available in 3 colors of soft elastic on the waist: black glitter, green glitter and pink ballerina glitter ... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Color
Light Medium Super

Shorty
Sporty

£24.90

Description

With its stitching and slight openings on the side like mini sports shorts, the Sporty boyshort gives you a cool sportswear look. Whether it’s for chilled days or sporty activities, they’re with you whenever you need maximum comfort. Plus, they are available in 4 colours: black, plum, grey with black elastic and black with gold elastic. Good coverage but discreet under cloth... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Color
Light Medium Super

Rose
Bikini

£32.00

Description

The Rose menstrual panties with their slightly low-cut bikini cut are so chic and sexy, it's hard to believe they're period panties and so effective against leaks! Its little gold trim at the waist and pretty feathery frills at the hips will make it the most refined panty in your wardrobe 😉 ! Because, even during our period, we have the right to be the most elegant, right? ! En savoir plus
Size Size guide
Absorption Which absorption to choose?
Light Medium Super

Suzie

£32.00

Description

We love the Suzie menstrual panties for their well-covered shape that doesn't fit in the buttocks and their black and white milleraies fabric made with certified organic cotton. The maximum of comfort and a timeless fabric, it is THE menstrual brief to have as a basic in your wardrobe. And of course, in terms of efficiency it is 🚀🚀🚀! En savoir plus
Size Size guide
Absorption Which absorption to choose?

triangle
top

£45.00

Description

To match with our menstrual swimming costume bottoms Naïa, Ariel or Brooke, this triangle top is tied in the back and behind the neck and fits perfectly all breasts. The wide band under the bust provides good support and it comes with a removable shell and a small lurex-edged bow that can also be removed depending on the look you want to adopt. FR 80 85 90 95 100 105 110... En savoir plus
Size Size guide
color
Light Medium

Naïa
bikini set

£76.00

Description

This swimming costume comprises: A Naïa period bikini bottom with a cross-wrapped high waist design. A triangle-style bikini top supplied with removable pads and a bow to top it off (or not) for an extra touch of glamour 😉. Available in 2 colours: black with gold trim or royal blue. And in 2 levels of absorption: LIGHT: for moderate flows or start/end of your cycle ... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Color
Light Medium

Brooke
bikini set

£72.00

Description

Discover this swimwear comprising: A matching triangle-style bikini top that comes with removable pads and a little royal blue or black bow with lurex trim (depending on the colour of the swimming costume you choose) that is also removable so you can wear it whenever you like! The Brooke period bikini bottoms with their pretty ruffles on the hips that makes you feel b... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Color
Light Medium

Ariel
bikini set

£72.00

Description

Period swimwear comprising: A triangle-style bikini top with pads and a removable bow (wear it with or without, whichever you fancy) Ariel period bikini bottoms These bikini bottoms also come with straps that enable you to switch from the classic swimwear style (=without the straps) to a lower cut bikini style (=with the straps). 2 colours are available: royal blue (wi... En savoir plus
Size Size guide
Absorption Which absorption to choose?
Color
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Need to test for real BEFORE BUYING?

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

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+ Over 200,000 Sisters have already been won over by the quality of our panties!

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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, please 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

Read more

Save money by choosing the menstrual panties pack.

Choose or compose your own pack of menstrual panties. Menstrual panties offer many advantages as a means of protection and hygiene. Comfortable and leak-proof, they're the healthiest alternative for taking care of your intimate hygiene during your menstrual cycle.

Beyond comfort and waterproofs, menstrual lingerie is an ecologically sustainable and economical choice. No more chemical pads or tampons.

And to make sure you're equipped and comfortable throughout your cycle, day and night, Sisters have designed packs of 3 to 7 panties for extra savings.

Choose your pack

The Sister's team has designed different packs to accompany you through your period.

The Starter pack is perfect for getting started with your new protection. It includes 1 super-absorbent Ginger boxer for the first few days of your period or during the night, 1 Colette panty with Medium absorption, ideal for mid-cycle, and a Sidonie bikini with Light absorption for the last few days of your period.

Who says you can't be sexy during your period? In the Girly Pack, you'll have 3 refined bikinis with lace trim. The first is Super absorbent for the first few days of your period, or on days when your flow is a little heavier, and 2 other bikinis with Medium absorption for other days.

More like classic panties? The Classic pack includes 3 ultra-comfortable menstrual briefs in a classic shape, but just as refined with their little ruffles at the waist. 1 super-absorbent Colette menstrual panty and 2 panties of the same model with Medium absorption.

For each of our packs, you can choose between 3, 5 or 7 panties. Other packs are available on this page, such as the Integral pack for 5 to 7 years of peace of mind.

Compose your pack by choosing the models of your choice.

None of the Sisters packs suits you? Compose your own pack of period panties and take advantage of a 10-20% discount.

For a single pack, you can choose not only several panty models, but also different degrees of absorption for the latter, so you can adapt your protection to your flow at different times of your cycle.

By opting for a pack, you'll benefit from 10 to 20% savings :
- 10% off for 3 pairs of panties
- 15% off for a pack of 5
- and 20% off for a pack of 7.

A smart choice for ordering with friends, since you can also mix panty sizes in your order.

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