Which size?

The Mooncup and MCUK are available in two sizes:‘A’ and ‘B’. Size A measures 46mm in diameter and 50mm in length. Size B measures 43 mm in diameter and 50mm in length. Both sizes have a pull stem 21mm long, which you can trim to the length that is right for you.

Sizing is based on pelvic floor tone, not menstrual flow, and it’s important to get the sizing right to get the best from your Mooncup or MCUK. Pelvic floor tone will vary according to your age, childbearing history and what sort of exercise you do. Corrective surgery to the vagina will also have implications. Check the guidelines to see which size you need:

Size Table

Size Size A

Because vaginal and pelvic floor tones naturally reduce with age, the size ‘A’ is recommended for women aged 30 or over. The difference between the ‘A’ and the ‘B’ is only small (3mm), but it is crucial!

Size ‘A’ is also recommended for all women who have given birth vaginally, regardless of age.

Size Size A

Designed for young girls and women under the age of 30 who have not given birth vaginally. It may also be suitable for women over the age of 30 who have had corrective surgery to the vagina, or who are advanced in tone-maintaining activities such as yoga, dance or pilates.

If you’re unsure of what size you need, please contact our Advice Team

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Absolutely love my Mooncup. I am now on my second one (after stupidly damaging my previous one by leaving it soaking in Milton for FAR too long) and I am a happy cheerleader for the product.
It takes a bit of getting used to (for the first month I used it along with pads, by month two I started with a pad but it was so awful compared to the product I stopped using them completely), but once you do you will never look back. Beyond any green consideration the Mooncup is very comfortable and you forget you have it in. Very useful for exercise and when you go on holiday, due to how long you can keep it in (subject to how heavy your flow is) and how easy it is to empty it and pop it back in.
Mooncups should be included as part of girls education about periods and products - I will never go back to pads now but I do wish I have found the product before I did.
Finally I would like to praise this site for the quick processing and dispatch of my replacement Mooncup. After discovering I had damaged my old one only 5 days from my period I was horrified. I placed my order Monday morning and my new Mooncup arrived today.
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How to use the Mooncup

Made in the UK

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Buy a Mooncup online or find your nearest stockist

Mooncup is available at Boots and independent shops everywhere