• Red Ruby Cup period underwear and menstrual cup on a white background
  • Two purple Ruby Cup menstrual cups with size comparison Small and Medium
1 10

The Dynamic Duo

The Dynamic Duo

Money-Back Guarantee

Safe For

Your Body

Reusable For Years

Includes 1 Ruby Cup Donation To Someone In Need

They Both Hold Up To 3 Super Tampons

Full-Length

Built-In Pad

Pants size guide

The Dynamic Duo

Double the comfort, double the confidence.
This bundle includes our fan-favorite Ruby Cup and a pair of Flow Freedom period panties for ultimate round-the-clock period protection.

The Details

Ruby Cup promises a comfortable fit with each wear. Made from 100% medical-grade silicone, its flexible and seamless design means easy application – perfect for first-time users.

Our Flow Freedom period panties are designed to follow life’s natural flows. Wear them for up to 12 hours, even on your heaviest days, and wave goodbye to leaky pads. Soft, stretchy, and reusable, they offer ultimate comfort and confidence. The hipster style provides protection under every outfit while keeping you carefree day and night. Planet-friendly and washable, they let you feel good while doing good.

Care Instructions

Ruby Cup Menstrual Cup:

* Before/after your period

Boil your menstrual cup in a pan or in a Ruby Sterilizer filled with water for 2–3 minutes.

* During your period

Simply empty your cup, rinse under clean running water, reinsert and go! In a public toilet, use a bottle of water to rinse your cup over the toilet. Or wipe clean with dry or damp toilet paper, then reinsert.

Wear. Rinse. Repeat. Simple!

Ruby Cup Period Underwear:

Our period pants are built to last. Care for them easily with these simple steps:

  • Wash on a cold wash and hang to air dry.
  • Avoid fabric softener and bleach.
  • Steer clear of tumble drying, or ironing.

Social Impact

Periods shouldn’t stop anyone from living their best life. That’s why, for every Ruby Cup sold, we donate one to someone facing period poverty around the world. Thanks to our community and NGO partners, we’ve donated over 150,000 cups so far! Plus, 2% of every Ruby Cup period pants sale goes to a Learning Centre nursery in Kisumu, Kenya, built with our long-time partners, the Golden Girls Foundation, supporting early education and nurturing young minds.

The Ruby Standard

We say no to nasties. Free from BPA, latex and toxins, our Ruby Cup menstrual cup provides a reliable and eco-friendly solution for your monthly cycle. And it's made from 100% safe and hygienic medical-grade silicone. Kind to you, kind to the planet – win-win.

Because we’re determined to provide period products that are good for you and the planet, the fabrics used in our Flow Freedom period pants are sourced from OEKO-TEX® STANDARD 100 certified materials. This means the materials have been tested for harmful substances, helping to ensure safety, comfort, and quality. We call that our pants priority.

Our products have also been rated as a Best Ethical Buy by The Good Shopping Guide.

Shipping & Returns

UNITED KINGDOM:

  • Tracked shipping: Free on all orders
  • Delivery: 2 business days from fulfillment

WORLDWIDE:

  • Tracked shipping: £5.00–£32.00 depending on parcel size and destination
  • Delivery: 5–10 business days depending on destination

RETURNS & EXCHANGES

We want you to feel confident with your Ruby Cup products.

  • Menstrual Cups: Covered by our 120-day Money-Back Guarantee. If the cup isn’t the right fit, you can request a full refund or a size exchange within 4 months of purchase.
  • Period Panties: Covered by our 60-day Try & Love It Guarantee. If you’re trying our underwear for the first time and it’s not right for you, you can get a refund for one used pair within 60 days, provided the panty is returned to us. If you purchased a bundle, only one used pair is eligible for a refund or a size exchange; all other items follow our standard return policy and must be returned unopened in their original packaging within 30 days of receiving them.

These guarantees apply only to the products listed above. Sterilizers and other accessories follow our regular return rules.

Read more about our return policies here.

View full details

You may also like

  • Ruby Cup menstrual cups in red with packaging and cotton bag

    The Ruby Cup Duo

    15% OFF

    The Ruby Cup Duo

    £44.12
    £51.90 £44.12
    Sale
  • Ruby Cup menstrual cups and steriliser in red with packaging and organic cotton bag on a white background

    The Ultimate Ruby Cup Bundle

    15% OFF

    The Ultimate Ruby Cup Bundle

    £55.97
    £65.85 £55.97
    Sale
  • Ruby Cup Starter Pack with red menstrual cup, sterilizer, and Flow Freedom period underwear

    The Starter Pack

    25% OFF

    The Starter Pack

    £48.64
    £64.85 £48.64
    Sale
  • Ruby Cup period products including a cup, underwear, and packaging on a white background

    Teenage Dream Period

    25% OFF

    Teenage Dream Period

    £47.89
    £63.85 £47.89
    Sale
  • Red Ruby Cup period underwear and menstrual cup on a white background

    The Dynamic Duo

    20% OFF

    The Dynamic Duo

    £40.72
    £50.90 £40.72
    Sale
  • Ruby Cup menstrual product set with red menstrual cup, steriliser, packaging, and cotton pouch

    The Clean + Green Duo

    15% OFF

    The Clean + Green Duo

    £33.92
    £39.90 £33.92
    Sale
  • Ruby Cup period underwear fearless sustainable period care - Lilac

    Fearless Period Underwear

    Fearless Period Underwear

    £18.95
    £18.95 £18.95
  • Person wearing a pair of Ruby Cup Flow Freedom purple period underwear

    Flow Freedom Period Underwear

    Flow Freedom Period Underwear

    £24.95
    £0.00 £24.95
1 8

FAQs About Ruby Cup Menstrual Cup

What is a Ruby Cup?

Enjoy the freedom of a period without limits with Ruby Cup. Created with first-time users in mind, our Ruby Cup’s a planet-friendly, reusable solution to single use tampons and pads.

Made from medical-grade silicone, Ruby Cup’s flexible and seamless design makes it easy to use, even for beginners.

Our cups give comfortable, reliable and leak-proof period protection for up to 12 hours, day and night, whatever your plans. Voted best cup for sports by Women’s Running Awards 2024.

3x the capacity of a super tampon
100% vegan and plastic free
15K+ tons plastic saved
120-day money back guarantee

What are the benefits of using a Ruby Cup?

A Ruby Cup is a menstrual cup that comes with a generous handful of benefits that traditional methods just can’t offer. Here are just a few:

*Eco-friendly: a Ruby Cup can be re-used for up to 10 years;

*Affordable: because a Ruby Cup lasts up to 10 years, you’ll rake in long-term savings of more than 95% compared to disposable period products;

*Less fuss: a Ruby Cup has 3 times the capacity of a super tampon. Depending on the heaviness of the menstrual flow it can be worn up to 8 hours. You have everything you need in one simple product;

*Healthy: the Ruby Cups are made from 100% medical-grade, soft silicone and are free from plastics, latex, toxins and bleaches. As they collect, but don't absorb the menstrual flow, the vaginal flora stays intact;

*Life-changing: we call it the ‘Buy One, Give One’ programme. For every cup we sell, we’ll donate one to a girl or woman without access to menstrual care product.

How do I start to use a menstrual cup?

Using a menstrual cup is easier than you might think as insertion is similar to inserting a tampon. Like with anything new, give yourself time to get used to the new product and choose a relaxing setting to practice insertion and removal until you find the most comfortable way for you. It may take a few times to get it right, and you might even want to practice when you are not on your period.

Check out our How to use a Menstrual Cup guide to see the top ways to make the change from tampons to cups, and simple steps to start using a Ruby Cup.

Which Ruby Cup size is right for me?

Take Our Size Quiz to find your perfect fit.

The two key factors to look out for when choosing the right cup size are:

- Position of your cervix (don’t know how to measure it? Check out the next question)

- Heaviness of your menstrual flow


How do I know if I have a high or low cervix?
Follow our guide to measure your cervix:

1- Wash your hands carefully
2- Squat on the ground, or lift one leg up onto the toilet seat or side of the bath
3- Insert your longest finger into your vagina
4- Feel for a round, raised circle with a dimple in the middle. It should feel like the tip of your nose — it’s most likely to be at the top of the front vaginal wall (closer to your belly button than to your back)

If you can insert your longest finger almost all the way up before touching it or you can’t touch anything at all, you have a high cervix.

How do I know if I have a high or low cervix?

Follow our guide to measure your cervix:

1- Wash your hands carefully
2- Squat on the ground, or lift one leg up onto the toilet seat or side of the bath
3- Insert your longest finger into your vagina
4- Feel for a round, raised circle with a dimple in the middle. It should feel like the tip of your nose — it’s most likely to be at the top of the front vaginal wall (closer to your belly button than to your back)

If you can insert your longest finger almost all the way up before touching it or you can’t touch anything at all, you have a high cervix.

How do I insert a Ruby Cup?

Always wash your hands thoroughly with soap and water before handling your cup.

Before inserting, you have to fold the cup. There are 3 folding methods you can try. Allow yourself some trial and error with each method to find the one that works best for you.

Now you have folded your cup, find a preferred position to insert your cup. Try squatting, standing with one leg up or sitting.

Gently push the Ruby Cup into your vagina with the rim first. Insert it in a horizontal, rather than a vertical, direction in line with your vaginal passage. You can use your other hand to separate your outer labia if that is helpful.

Push the cup inside until the body of the cup is all the way inside your vagina.

Once inside, the cup will unfold to create a suction that keeps it well positioned and prevents leaks. You may sense it popping open.

You can test that the cup is fully opened and has created a suction by trying to pull or wiggle the stem very carefully. It should not move more than a few millimeters. If you feel resistance when carefully pulling it, it means that the suction is created.

You can also run a finger along the base of the cup (not the stem). If you feel that the walls are still collapsed inside, rotate the cup at the base of the cup to reposition it to pop open.

You can also run your finger along the rim to check for creases. Wiggle the stem to remove any creases as these will cause leaks.

How do I fold a Ruby Cup?

There are different ways of folding a Ruby Cup before insertion.
Here are 3 of the most popular folding methods:

C fold: Squeeze the walls of the cup together and fold into a c-shape.

Punchdown fold: Pinch down one wall of the cup into its base so the cup forms a triangle shape.

7 fold: Squeeze the walls of the cup together and fold one top corner so the cup forms a 7 shape.

Where do I place my Ruby Cup?

Your Ruby Cup should sit lower than a tampon.
It’s ok for the stem to be all the way inside the vagina as well but it should be close to the vaginal opening.
If the stem is too long, sticks out from the vaginal opening, and feels uncomfortable when the cup has been inserted, you can shorten it with a pair of scissors. We do not recommend shortening the stem on your first try.
Do not shorten the stem when the Ruby Cup is inside the vagina.
Give yourself some time to make sure that shortening the stem is the right choice for you.

How do I know if my cup is inserted correctly?

When your cup is correctly inserted, you will not be able to feel it, and there will be no discomfort. Use your finger to push your cup higher or lower until it sits comfortably. Many women find that twisting their cup helps it to sit in the correct place, and that with a little time the silicone material softens with your body heat.

How do I know when my Ruby Cup is full?How do I know when my Ruby Cup is full?

Read more