"Tonight" Period Underwear

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 yrs 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.

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LIGHT

Equivalent :

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

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

STUDENTS ? -15% DISCOUNT ALL YEAR ROUND Read more

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Zoom“Tonight” Hipsters
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Zoom“Tonight” Hipsters
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Zoom“Tonight” Hipsters
BESTSELLER
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Zoom“Tonight” Hipsters
BESTSELLER
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Zoom“Tonight” Hipsters
BESTSELLER
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Zoom“Tonight” Hipsters
BESTSELLER
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Zoom“Tonight” Hipsters
BESTSELLER
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Zoom“Tonight” Hipsters
BESTSELLER
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Zoom“Tonight” Hipsters

“Tonight” Hipsters

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 an...
Regular price £27.50
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Size Size guide
Absorption Which absorption to choose?
livraison

Delivery from (excluding public holidays)

Satisfied or refunded

30 days to test it

Free shipping

Starting at £40

0 leak

0 leak

0 odor

0 odor

0 waste

0 waste

0 humidity

0 humidity

0 toxicity

0 toxicity

0 wastefulness

0 wastefulness

“Tonight” Hipsters
“Tonight” Hipsters

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 for example) if your flow is really heavy. Also very useful in case of vaginal discharge or slight urine leakage or in anticipation of your period to avoid unpleasant surprises.

Available in LIGHT absorption, ideal for the end of your period, MEDIUM for light to normal flows or SUPER for normal to heavy periods.

Bonus: you'll use fewer pads or tampons, a huge plus for your purse and the planet!

Sisters Republic UK

Composition and impact

The materials used to manufacture our knickers are free from substances harmful to the body and the environment (no chemicals and in particular no treatment with silver nanoparticles). Our fabrics, laces and elastics are BIO and/or OEKO-TEX certified. Our manufacturing and materials are all sourced from the Mediterranean basin.

What's more, we package our panties in a 100% recyclable Kraft cardboard envelope.

To find out more, visit our "Manufacturing" page, accessible from the main menu.

Sisters Republic UK

Satisfied or your money back - 30 days to test

For your 1st purchase, we offer you the possibility of testing your panties free of charge for 30 days, i.e. 1 entire cycle.

And if it doesn't suit you, we'll give you your money back, no questions asked!

You're not taking any risks, so GO! GO! GO!

Find out more about the "Satisfied or your money back" offer at the bottom of the page.

Sisters Republic UK

Deliveries

We deliver to all countries in the world.

We offer home delivery from £34 in United Kingdom

For other cases:

- United Kingdom, Germany, Belgium, Luxembourg, Netherlands, Liechtenstein, Switzerland: €6.10

- Metropolitan France (order under £80): £4.98

Other European Union countries: £8.90

Rest of the world: £18.35

We cannot anticipate or take responsibility for any customs charges that may apply in the recipient's country.

Delivery times

Our products are delivered by post (Chronopost) for France or by Chronopost or Delivengo for abroad. Orders are prepared from Monday to Friday, excluding public holidays, within 12 to 48 hours of receipt of payment for the order.

These times do not include pre-orders.

Postal delivery is then usually made within 48H/72H for an address in mainland France.. 

International delivery times can vary from 2 to 4 days in Europe to longer for countries outside Europe.

Sisters Republic UK

Directions for use

Depending on how heavy your periods are and the level of absorption you choose (light, medium or super), your Sisters Republic panties can replace your tampons, sanitary pads, cup... or be used to reinforce them. For example, if you have a bleeding period (copper IUD, endometriosis, hormonal imbalance...) and you want a 100% leak-proof guarantee, you can slip on your Sisters Republic panties in addition to other protection and get through the day with complete peace of mind. Or you can use your Sisters Republic panties on their own, but only from day 3 of your period, when the heaviest days have passed.

If, on the other hand, you have a normal to light period, you can use your Sisters Republic panties on their own throughout your cycle, for up to 12 hours at a time, without any risk of leakage, odor or wetness. All you need to do is adapt the degree of absorption of your panties to your current flow: Super absorption for the start of your period, Medium for the middle of your period and Light for the end of your period.

And to find out exactly how long you should keep your panties on, simply rely on how you feel, and change them as soon as you feel a slight dampness. But here are a few pointers to get you started:

TABLE


And for your first use, don't forget that it's best to start by testing at home, quietly, to see how it goes and understand your flow.

Sisters Republic UK

Maintenance tips

To maximize the absorbency of your panties, we recommend washing them 2 times before use. Then, to make them last as long as possible - because Sisters Republic period pants are washable and reusable for many years - we recommend :

1/rinse your panties in cold water as soon as you remove them, until the water runs clear.

2/wash it in the washing machine on the 30°C synthetic program (or by hand) with the rest of your laundry (I promise, everything will be fine :-)). If you don't have enough laundry, you can use the Sisters Republic 3-in-1 pouch to store your rinsed panties while you wait for your next wash - that's what the pouch is for :-) .

Do not use fabric softener or bleach.


Ideally, put your panties in a laundry net when machine-washing or in the Sisters Republic 3-in-1 pouch, which doubles as a laundry net.

3/let it air dry and do not use a tumble dryer.

Sisters Republic UK

Tested and approved under independent gynecological supervision

95%

Find panties effective in preventing leakage

95%

Find the pants comfortable to wear

95%

Recommend Sisters Republic panties to a friend

95%

Find underwear easy to wash

How it works ?

In fact, it's just like wearing normal panties. You don't need to use anything else, because the panties themselves act as protection, with an absorbent part hidden inside.
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1. BREATHABLE ORGANIC COTTON LINING

2. ULTRA-ABSORBENT, ANTIBACTERIAL FABRIC

3. LEAK-PROOF WATERPROOF FABRIC

LEARN MORE
Sisters Republic UK

The effectiveness of our panties has been tested under independent gynecological supervision.
View study results

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Compose your pack

Compose your pack

Put together your personalized package and save

Create my personalized pack

Tips for composing your pack

Depending on the length of your cycle, short or long, you'll need between 4 and 10 panties. If you want to wear your menstrual panties day and night, and wash them all at the same time at the end of your cycle, you'll need between 8 and 10 panties. If you want to wash them so you can reuse them several times during your cycle, 4 to 5 panties will be sufficient. You'll need at least one panty for the day and one for the night, multiplied by the number of days of your period.

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Need to test for real BEFORE BUYING?

Test our panties in real-life conditions 😉 for 2 full cycles, and if you're not convinced, we'll give you your money back. No questions asked!

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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 in 7 years

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 how much you can save for your wallet and the planet.

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 in 7 years

Read more

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