Menstrual Cups

Mooncup (MCUK)

Country of origin: UK
Composition: Medical Grade Silicone
Sizes: A & B (A = After childbirth, B = Before childbirth)
Dimensions: B = 4.3cm width. A = 4.6cm width.  Both have  5cm length plus 2.1cm long stem.
Capacity: Size B = 13mls (to under airholes), Size A = 15mls (to airholes)
Stem: Hollow tube
Measuring Lines: Yes (inside), Cup B marks 6mls and 12mls, and Cup A 7.5mls and 15mls
Cost (RRP): GBP$18.99 (including International postage at official site)[Currency Converter]
Been around since: 2000
Unique Design?: Semi-Unique (This cup design appears to have been created by this brand. However it does have resemblances to other brands)
Other Details: Registered with the Vegan Society (Vegan approved). “Original Mooncup” (first cup to be given that name). Pay attention to the look of the product and packaging when buying from online stores to make sure you are buying the Mooncup you intend to (as there are other brands of cup using this name).  Often known as “Mooncup (UK)”  or “MCUK” to help distinguish it as the Original UK version.  Original version was a slightly yellowed silicone, and had 2 grip lines near the base of the stem.  The updated version has grip lines all down the stem and is a whiter silicone.

June 11, 2008 - Posted by | The Cups | , ,


  1. This is my favorite cup. I love it! The rim is firm but the middle part is soft and feels like it completly conforms with my body. It is sooo comfortable I only wish it held a little bit more flow like 20mls but this is my favorite out of the other two I own.

    Comment by Radianceunveiled | April 20, 2011

  2. Us keeper had this design first. Just in rubber.

    Comment by Taylor | December 3, 2011

  3. I love my moon-cup, although it took me a while to get the hang of extracting it, especially since I had to trim the stem for comfort.
    My review Blog:

    Comment by Katherine Smith | March 2, 2013

  4. It changed color right after one period of use. Had the same issue with Yuki cup before. Never tried any other cups so naturally, I wonder if that happens to all clear cups regardless of the brand?

    Comment by Mori | April 27, 2015

  5. Possibly like how some people have blood that stains their cloth pads and some people have blood that doesn’t stain – maybe it is the same with cups?

    My Yuuki seemed to go yellow just sitting there not being used (I used it one cycle to review, it wasn’t yellow then, but gradually it has yellowed with age.

    My Lunette has yellowed, but it took a while.

    My Mooncups (old style) came yellowed. The new ones are clearer/whiter.

    Comment by obsidian | April 27, 2015

  6. It’s normal for all cups to stain. Unless they are the solid color cups such as a MiaCup, Keeper Cup, Lilycup etc. Those are the only cups that I own that have not stained/least you can’t see it. if you are concerned you can always sun your cup by putting it in the window and letting the sun bleach it back naturally. I did that a few times but really I don’t care much anymore as the staining does not affect the use of the cup.

    Comment by Prettycurls | April 27, 2015

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