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Menstrual Cup Sizing Questions

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Do all menstrual cup manufacturers offer a one-size-fits-all cup?

No. There are a few companies that do offer one size of cup, but it does not fit all. Because everyone is different, each person will have a different experience with any given cup. While some companies offer a small or a large size, there are other companies that may offer even more size options.

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How do I choose the right menstrual cup size for me?

One of the best ways to narrow down which menstrual cup might work for you is to locate and measure your cervix. This will help you determine if you should try a small or a large size. If you’re in doubt, some companies offer a two-pack of cups for a discounted cost. This will allow you to try both sizes to see which one feels more comfortable, is easier to reach, or has the capacity you want. More info can be found on how to locate and measure your cervix here.

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Does the size of the menstrual cup influence its holding capacity?

Yes. Menstrual cups vary in sizes, shapes, and diameters. All of these factors can affect how much liquid a cup can hold.

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Does it matter which size I choose in a menstrual cup?

It will matter for some, but it may not for others. Locating and measuring your cervix will help determine if a size small would be more comfortable for you to wear, or if a size large will be easier for you to reach. The size and shape should also be taken into consideration for comfort, ease, and capacity.

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If I have had no children and am 35, which size cup should I choose?

As a general guideline for someone with no knowledge of the height of their cervix, the large size is often recommended for those over the age of 30. However, it is best to locate and measure your cervix for a better idea about which size works best for you. If you’re in doubt, some companies offer a two-pack of cups, one of each size, for a discounted cost. This will allow you to try each size to determine which one is more comfortable to use and wear, or easier to reach for you.

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If I am a virgin, what type and size of menstrual cup should I use?

People have different definitions of the word “virgin”. If you’re comfortable with the inserting process, and using a menstrual cup doesn’t go against your beliefs, religious or otherwise, then the smaller size would be recommended as a standard guideline. The small-sized menstrual cup may be more narrow and more comfortable to wear as well as to insert. However, you should locate and measure your cervix to better determine which size works best for you. If you’re in doubt, some companies offer a two-pack of cups, one of each size, for a discounted cost. This will allow you to try each size to determine which one is more comfortable to use and wear, or easier to reach.

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I have had 3 children by vaginal birth and I am 25. Which menstrual cup size will work for me?

As a general guideline for someone with no knowledge of the height of their cervix, the size small is often recommended for those under 30 years of age. However, you should first locate and measure the cervix before choosing a size. If you’re in doubt, some companies offer a two-pack of cups, one of each size, for a discounted cost. This will allow you to try each size to determine which one is more comfortable to use and wear, or easier to reach.

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Do different brand sizes vary even though they are the same size?

Yes. Each brand has a different design, which may include the shape, size, diameter, length, firmness, and color. Buying a small-sized cup from one brand may be very different in length and diameter to a small-sized cup from another brand.

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I have a light flow and have no children, which cup size is best?

Most companies suggest a small-sized cup for those with a light flow. However, it may not always be the best choice for your situation. If you have a high cervix, you may opt for the larger size so that the cup is easier to reach for removal. Read more about cervical height here.

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What is the best size for someone who has a heavy flow?

It’s enticing to choose the largest cup on the market for the capacity if you have a heavy flow. However, it may not always be the best choice for your situation. If the cup is too long or wide, it may not be comfortable for someone with a low cervix. Read more about cervical height here.

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I have a high cervix, which menstrual cup sizes are best for me?

Someone with a high cervix might prefer large-sized cups, cups that are V-shaped, or cups with a bit more length. This will allow make the cup easier reach when the time comes to remove and empty it.

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I have a short cervix, which menstrual cup size should I choose?

If a brand offers more than one size, the smaller one would be more suitable for a low cervix. Pay attention to the length of the cup, as some sizes are the same length and only differ in the diameter. Some brands offer a cup specifically designed for a low cervix – these are normally labeled as low cervix, mini, or shorty.

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I purchased a menstrual cup in a large size because I have had 2 children vaginally and am over 35. Why is it too big?

The sizing criteria that each menstrual cup brand designates to help consumers choose the right size is not always 100% fool-proof and is only a guideline. To better the chances of finding the correct size for your body, locate & measure your cervix height to see which cup size might be more comfortable or easier to reach for you.

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4 Comments
  1. Diva cup runs big! I’m 33 and have 3 children, so i chose size 2, even though I was thinking that the size looked wrong, i purchased anyway. Big mistake, it is so long, uncomfortable, and puts so much pressure inside that it is not wearable. I purchased size 1 and was very happy with it, it almost feels like it’s not even there. However i am not happy that Diva Cup milked an extra $40 out of me, and I can’t help but think they do this on purpose, easy way to double profits.

    • Thanks for this comment! I just tried it few days ago for he first time. I’m 42 and had 2 kids one vaginaly (8 years ago) and one c-section (4 years ago). I purchased Diva Cup in size 2. It is sticking out ad falling out. I was not sure if it should feel this way? What is the best fit? It should be all inside? I had to cut out entire stem because it was coming out completely. Now I guess size 2 is too large for me and I’m going to buy size 1.
      Thanks for helping me to realize the problem.

  2. If i am not a virgin but am a teen that hasnt had any children, what size is best ? & what are the diameter sizes of all the femmycycle cups ? There isn’t any dimensions for the actual product anywhere, just for the box.

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