Period cup or menstrual cup… What do you call your Mooncup®?

We’ve created a poll to find out which name you prefer. But first a little background about how our galactic name came to be… The Mooncup® is of course our beloved brand name – the original medical-grade silicone menstrual cup….


Mooncup available at ASOS. This season I’ll be wearing… a Mooncup® menstrual cup.

This Autumn, as you’re trawling online for the cosiest of trench coats, jumpers and scarfs, you’ll find something a little different to wear for the season ahead… and many more for that matter. We’re very excited to announce that the…


“Employee Ownership” – How Mooncup Ltd is owned and run

We all know menstrual cups are a revolutionary way to manage your period, right? So what about a revolutionary way of running a business?  To celebrate Employee Ownership Day we wanted to write a blog to share how Mooncup Ltd,…


Make sure your Mooncup® is the Real Deal

Make sure your Mooncup® is the real deal So you’ve been thinking about ditching the disposables for ages; your best mate’s been raving about the Mooncup® for years now; tampons are a drag and you’re fed up spending your hard…


Can you go swimming on your period?

It’s true for many of us that our plans to visit the beach or swimming pool don’t exactly elicit squeals of glee when we realise that our period wants to come along too…
But can you go swimming on your period? The short answer: yes! You needn’t worry about slipping on your swimsuit at that time of the month (and maybe grabbing your Mooncup for the outing).

Unfortunately there is a lot of misinformation floating around on this topic so we thought it might be helpful to bust some unhelpful myths we’ve come across about swimming on your period.

6 MYTHS about swimming on your period

Swimming makes your cramps worse

Low-intensity exercise, such as swimming, has actually been proven to help relieve menstrual cramps. This is because it encourages your body to release endorphins, which can act like natural painkillers. What’s more, the buoyancy of the water can soothe back pain while being easy on the joints. Exercising when you’re on your period can also help give you more energy and studies have found it can help combat depression and symptoms of anxiety.

Ocean Swimmer Beth French, who swam the English Channel in 2012, switched to a Mooncup to help with cramps associated with using a tampon while swimming, saying; “Swimming long swims with a tampon in ends up feeling like you have an iron bar in your lower gut and can cause cramps which are never good! So I switched to a Mooncup, which is much better as it is more malleable.”

Read more testimonials about swimming with a Mooncup.

Swimming on your period is unhygienic

Periods are perfectly natural! They are not ‘unsanitary’ and shouldn’t be treated as a bio-hazard. If you’re in a large body of water (whether that be the sea or a swimming pool) and your period does happen to start unexpectedly, then chances are it will be so diluted so it won’t even be visible.

To help put your mind at rest, an Olympic size swimming pool contains roughly 2,500,000 litres of water, whereas most people lose less than 80ml of menstrual blood during an entire period!
And as a final point to allay any concerns that swimming on your period could be ‘unhygienic’, many swimming pools are treated with chlorine in order to protect swimmers from anything that could end up in the water (yes, you’ve guessed it – that’s everything including urine, sweat and even faecal matter).

And if you’re a Mooncup user don’t forget; we recommend emptying your Mooncup before and after swimming (as with any form of exercise).

People can tell you’re on your period when you’re in the pool

Periods are nothing to be ashamed of but even so, there’s no reason why anyone should be able to tell that you’re on your period while you’re swimming. No-one will be able to tell you’re on your period at all unless you choose to tell them. Period or not, your focus should be on enjoying yourself! 🙂

One benefit of using the Mooncup is that it is worn completely internally, which means you don’t even have to worry about a pesky tampon string making an unwelcomed appearance either (in the water or the changing room).
The Mooncup also holds up to three times more than a regular tampon, so you may even be able to swim for longer!

You’re more likely to get an infection if you swim on your period

Swimming on your period should not increase your chances of vaginal infection. There are, however, a few things to consider.
The chlorine used in swimming pools as well as the sediment in the sea may irritate the vagina or vulva (whether you are on your period or not), and showering after you have been swimming is always recommended. If this is something you’re worried about, getting changed out of any wet clothes or swimwear may also reduce the likelihood of irritation or infection.

As a Mooncup Advice Assistant, I can assure you that vaginal infections are not an uncommon complaint around the time of your period, but they should not be ignored. Generally, the vaginal pH is acidic but, during menstruation the vaginal pH becomes more alkaline. Because of this, some people are more prone to getting a non-serious bacterial infection at this time – regardless of whether they are swimming or not. If you feel you may have an infection or have noticed any change to your vaginal discharge (change in smell, colour or consistency) then you should get this checked out by a doctor or nurse who will be able to help.

The sharks will come for you!

It’s an old-wives tale that sharks will be able to sniff out your period blood and come looking for you. Steve Kajiura of Florida Atlantic University’s Shark Lab explained that sharks don’t even want our blood! What they’re interested in is detecting amino acids in the water, such as those excreted by parts of marine animals that sharks are actually evolved to eat.

So, can you swim with sharks on your period? Marie Levine, founder and executive director of the Shark Research Institute, told Mother Jones back in 2012, “I’ve been diving for decades and even got my period while underwater with a school of hammerheads. The sharks were not interested and I had to fin like crazy to get close to them.”

Okay, so you can swim on your period without fear of sharks or infections, it’s not unhygienic, no-one will be able to tell and your cramps may even be relieved! But…

You can’t scuba dive on your period, right?

Check out our scuba diving on your period testimonial from a Mooncup user themselves on this matter:

“Just wanted to let you know that I wore my Mooncup® while diving several times a day for a few weeks, to depths of approx 18 metres, and it was absolutely fine. Cleaning it well on a remote island with no running water was more of an issue, but I managed! Thanks very much.”


So, why not go with the flow and enjoy a nice dip in the water – period or not!


Image credit – Batoko Swimsuits. Check out the fabulous range of swimsuits from Batoko. All their swimwear is 100% recycled material made from plastic bottles.

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