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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I bought a mooncup a few months ago and it has revolutionised my life. I know that sounds extreme, but it really has. I travel a lot and had very irregular periods. Now, I just pack the mooncup and, if I think my period might be coming, I can insert it and relax. It's worth it for that alone, but if you want the icing on the cake... I haven't had a single 'leakage' problem since using it and in addition, my periods have for the first time in twenty years, regulated themselves. To know that I will now have no worries when I have my period is simply fantastic. On a practical note for those who might be unsure as to whether to get one: The first few times I used it I did find it awkward but the telephone line was a lifesaver. Really friendly woman who was practical and helfpul. I persevered. You do need to get a bit more 'hands on' than with a tampon but you get used to it really quickly and it is worth being more hands on to have no worries about knickers, sheets, or running out of tampax / not being near a loo. Please, please try one. You will never go back to tampons again.
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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