Menstrual Cups vs Discs: How to Choose

Published 30 September 2021 Last reviewed 5 October 2026 By Brenda Tootell 19 min read

best menstrual cup vs best menstrual disc Australia

Choosing between a menstrual cup and a menstrual disc comes down to fit, comfort, flow, removal preferences and how you want to use your period product.

Both collect menstrual flow rather than absorbing it, but they sit differently inside the body. A cup sits within the vaginal canal and opens to form a seal against the vaginal walls. A disc sits higher, with its reservoir beneath the cervix, its back rim in the vaginal fornix and its front rim tucked behind the pubic bone.

Neither option is automatically better or easier for everyone. Comparing actual dimensions, firmness, capacity and removal features is more useful than relying on generic size labels or assuming one type will suit every body.

Quick guide: Consider a cup if you prefer a more structured reservoir, want a wide choice of lengths, shapes and firmness levels and are comfortable releasing a seal during removal. Consider a disc if you prefer a higher, flatter fit, want to avoid a cup-style seal or want a product that may be suitable for penetrative period sex.

Menstrual cup or disc: the quick answer

Consider a menstrual cup if you:

prefer a cup-shaped product that sits within the vaginal canal
want a wide choice of lengths, diameters, shapes and firmness levels
want to fine-tune fit according to your cervical position
prefer a more structured reservoir during removal
are comfortable checking that the cup has opened
are comfortable releasing the cup's seal before removal

Consider a menstrual disc if you:

prefer a higher, flatter internal fit
do not want a product that relies on a cup-style seal
want the option of a product designed for penetrative vaginal sex
prefer a notch, tab, loop, ring or other disc removal feature
are comfortable learning to position the back rim behind the cervix and the front rim behind the pubic bone

Neither is universally easier. A cup requires you to learn how to fold it, allow it to open and release its seal. A disc requires you to position it beneath the cervix, keep the front rim tucked behind the pubic bone and learn how to remove a shallow flexible reservoir.

If you are unsure where to start, take our Find Your Best Fit Quiz or visit the Menstrual Products Comparison Hub.

What is the difference between a menstrual cup and disc?

The main difference is where and how each product sits inside the body.

Menstrual cup: folded and inserted into the vaginal canal, where it opens and forms a seal against the vaginal walls. The cervix usually sits above the cup opening but may sit partly inside it depending on your anatomy and the cup's fit.
Menstrual disc: compressed into a narrow shape and inserted further back. The reservoir sits beneath the cervix, the back rim rests in the vaginal fornix and the front rim tucks behind the pubic bone.

Side-view comparison showing the position of a menstrual cup and menstrual disc

Neither product absorbs menstrual blood. Both collect it so it can be emptied, cleaned where required and reused according to the product instructions.

Menstrual cup vs disc comparison

Feature	Menstrual cup	Menstrual disc
Design	Cup-shaped reservoir, usually with a stem or another grip feature	Shallow flexible reservoir surrounded by a rim
Position	Within the vaginal canal	Higher in the vagina beneath the cervix
How it stays in place	Opens and forms a seal against the vaginal walls	Back rim rests in the vaginal fornix and front rim tucks behind the pubic bone
Important fit measurements	Body length, total length, diameter, shape and firmness	Diameter or overall dimensions, rim firmness, shape and removal design
Cervix height	Often useful when choosing cup length	Useful for understanding placement and reach, but does not directly determine disc diameter
Capacity	Varies between models	Varies between models; stated capacity may differ from usable capacity once positioned
Removal	Release the seal, then remove by the base	Lower the front rim using a finger or removal feature, then slide the disc out
Removal messiness	Structured reservoir can be easier to keep upright	Shallow flexible reservoir may spill more easily while you are learning
Auto-dumping	No	Some people experience auto-dumping on the toilet depending on fit and anatomy
Penetrative vaginal sex	Generally not designed to be worn	Some discs are specifically designed for this use; check the product instructions
Reusable or disposable	Reusable	Reusable and single-use options are available
Wear time	Follow the product instructions; Australian cup requirements specify a stated maximum of no more than 12 hours	Follow the instructions for the individual disc
IUD evidence	Research suggests a possible association with expulsion, but results vary and may depend on IUD design	Direct evidence is very limited; cup findings should not automatically be applied to discs

How menstrual cups work

A menstrual cup is a flexible container that collects menstrual flow within the vaginal canal.

You fold the cup before insertion. Once it is comfortably inside, it opens and forms a seal against the vaginal walls. To remove it, you reach the base of the cup, release the seal and gently bring the cup down before emptying and cleaning it.

Cups are available in different lengths, diameters, shapes, firmness levels and capacities. These differences can affect comfort and fit more than the brand name or a generic “small” or “large” label.

A cup that is too long may feel crowded if your cervix is relatively low, while a very short cup may be difficult to reach if your cervix is high. Firmness, diameter and shape can also affect opening, pressure and comfort.

Compare specific products in our Menstrual Cups Comparison Chart.

You can also browse:

How menstrual discs work

A menstrual disc has a flexible rim and shallow reservoir. It is compressed into a narrow shape for insertion and guided back towards the tailbone.

The back rim is positioned in the vaginal fornix behind the cervix. The front rim is then tucked behind the pubic bone so the reservoir sits beneath the cervix.

A disc does not rely on the same vaginal-wall seal as a cup, but it still needs to fit your anatomy. A disc that is too large may feel uncomfortable or repeatedly come untucked. A disc that is too small may fail to remain securely supported.

Disc designs also use different removal features, including finger notches, tabs, loops, rings and tails.

Compare dimensions, firmness, capacity and removal designs in our Menstrual Disc Comparison Chart.

Fit, cervix position and anatomy

Your anatomy is one of the most useful starting points when choosing either product.

Cervix height is generally more useful when choosing menstrual cup length than when choosing menstrual disc diameter.

A low cervix may leave less room for a longer cup, while a high cervix may make a very short cup more difficult to reach.

Disc fit depends more on the front-to-back space between the vaginal fornix and pubic bone, as well as the position of the cervix. A high cervix may affect how easy a disc is to reach, but it does not automatically mean you need a larger disc. Likewise, a low cervix does not automatically mean you need a smaller one.

Learning how to check your cervical position may help you understand your anatomy and narrow your options. Measure during your period because cervical position can change throughout your cycle.

Age, birth history and generic size labels do not determine internal anatomy. Treat manufacturer recommendations as starting guidance and compare actual product measurements whenever possible.

What if you have a tilted or retroverted uterus?

A tilted or retroverted uterus does not automatically prevent you from using either a cup or disc.

The direction of the cervix may influence insertion angle and positioning. Some people find it easier to position a disc beneath an angled cervix, while others prefer a cup. There is no universal product recommendation based on uterine position alone.

Which is better for heavy flow: a cup or disc?

Both cups and discs are available in different capacities.

Although menstrual discs can look much larger, they do not necessarily provide more usable capacity. Their flexible reservoirs may fold or compress once positioned inside the body.

Capacity measurements can also vary between manufacturers, so use stated figures as comparisons rather than guarantees of how much fluid you will actually collect.

Fit comes first. A high-capacity cup or disc will not be useful if it is uncomfortable, difficult to position or repeatedly leaks.

If heavy flow is a priority, browse our period care options for heavy periods after narrowing products by fit.

Heavy or prolonged bleeding can sometimes require medical assessment. Speak with a healthcare professional if your bleeding has changed significantly, affects your daily life, causes symptoms such as dizziness or shortness of breath or otherwise concerns you.

Insertion and removal: which is easier?

Cups and discs have different learning curves. Neither should require force or cause ongoing pain.

Inserting a menstrual cup

Wash and dry your hands.
Fold the cup using a fold you can hold comfortably.
Guide it gently back towards your tailbone.
Allow the cup to open inside the vaginal canal.
Check that it has opened and feels comfortable.

See How to Use a Menstrual Cup for complete insertion, removal and cleaning guidance.

Inserting a menstrual disc

Wash and dry your hands.
Pinch the sides of the rim together so the disc becomes long and narrow.
Guide the back rim towards your tailbone and behind the cervix.
Tuck the front rim securely behind the pubic bone.
If comfortable, check that the cervix is positioned above the reservoir rather than outside its edge.

See How to Use a Menstrual Disc for detailed positioning and removal guidance.

Removing a menstrual cup

Use the stem to help locate the cup rather than pulling on it alone. Reach the base and pinch it or press the cup wall inward to release the seal before bringing the cup down.

A cup's more structured body may make it easier to keep upright while removing and emptying it.

Removing a menstrual disc

Hook a clean finger under the front rim or use the product's removal feature as directed. Lower the rim from behind the pubic bone and slide the disc forward while keeping the reservoir as level as possible.

Disc removal can be messier while you are learning because the reservoir is shallow and flexible. Removing it over the toilet or in the shower can make the process easier.

What is menstrual disc auto-dumping?

Some people find that their menstrual disc releases a small amount of fluid when they bear down while using the toilet. This is often called auto-dumping or self-emptying.

It does not happen with every disc or every body. It depends on the disc's fit, your anatomy and how your pelvic floor and surrounding structures move when you bear down.

Auto-dumping is not the same as uncontrolled leaking. If your disc releases fluid while you are walking, exercising, sitting or going about your normal activities, check its positioning and fit.

If you are having trouble with leaking or untucking, use our menstrual disc troubleshooter.

Period sex, exercise, swimming and sleep

Penetrative vaginal sex

Menstrual cups are generally not designed to be worn during penetrative vaginal sex.

Some menstrual discs sit high enough and have a sufficiently flat profile to be designed for this use. Only wear a disc during penetrative vaginal sex if the manufacturer specifically states that the product is suitable.

A menstrual disc is not contraception and does not protect against sexually transmitted infections.

If this feature matters to you, browse our period products designed for penetrative period sex or read our period sex guide.

Exercise and swimming

Both cups and discs can be worn during exercise and swimming when they fit correctly and are used according to their instructions.

Repeated leaking, pressure or discomfort during movement may indicate a positioning issue or that the product's size, shape or firmness is not ideal for you.

If exercise and movement are a priority, browse our period care options for active and sporty people.

Sleeping

Whether you can sleep with a cup or disc depends on the product's stated wear time and your flow.

Calculate the entire time the product will remain inserted, not just the hours you expect to be asleep.

For menstrual cups supplied in Australia, product information must state a maximum duration of use that does not exceed 12 hours. This should not be interpreted as a universal 12-hour recommendation for every menstrual disc. Follow the instructions for your particular product and empty it sooner when required by your flow.

Can you use a menstrual cup or disc with an IUD?

Direct evidence about menstrual discs and IUD expulsion is very limited. Most of the available research relates to menstrual cups, so cup findings should not automatically be applied to discs.

Research into menstrual cups and IUD expulsion is still developing. A 2023 systematic review found that available studies were limited and reached different conclusions about whether cup use was associated with higher expulsion rates.

A 2024 analysis of a copper-IUD trial found higher odds of expulsion among cup users with one of the two IUD designs studied but not the other. Accidental self-removal was more common among cup users regardless of IUD design.

These findings should not be generalised to every IUD or every person.

If you use a menstrual cup with an IUD:

discuss cup use with the healthcare professional who manages your IUD
release the cup's seal fully before bringing it down
avoid pulling on the stem alone
take care not to catch the IUD threads between the cup and the vaginal wall
seek medical advice if you think your IUD threads have changed position or length

If you use a disc, follow the manufacturer's guidance and discuss any concerns with your healthcare professional.

Read Can You Use a Menstrual Cup or Disc with an IUD? for a fuller explanation of the evidence.

Safety, cleaning and wear time

Menstrual cups have been studied more extensively than menstrual discs. Overall findings about cup use are reassuring, but the quality of the available research varies and there is comparatively little evidence evaluating discs.

This difference in evidence should not be interpreted as proof that one product is automatically safer than the other.

Whichever product you choose:

wash and dry your hands before insertion and removal
follow the manufacturer's first-use, cleaning and sanitising instructions
do not exceed the stated wear time
empty the product sooner when required by your flow
inspect reusable products for tears, cracks, stickiness or other deterioration
store reusable products according to their instructions
never wash, boil or reuse a product sold as single-use

Toxic shock syndrome

Toxic shock syndrome is rare but serious. Follow the hygiene and wear-time instructions supplied with your product.

Remove the product and seek urgent medical help if you develop symptoms such as a sudden high temperature, vomiting, diarrhoea, dizziness, confusion, muscle aches or a widespread red rash while using an internal period product.

Stop using the product and seek medical advice if you experience sharp or persistent pain, difficulty urinating, unusual discharge or odour or symptoms that continue after removal.

What should you not choose a cup or disc by?

Try not to choose based only on:

your age — age does not determine your internal anatomy
whether you have given birth — birth history alone does not tell you what will fit
the words small, regular or large — sizing is not standardised
the highest stated capacity — fit comes first
the most popular brand — popularity does not determine comfort
cervix height alone — particularly when choosing disc diameter
a removal feature alone — a tab, loop or long stem cannot compensate for poor overall fit

Choose the product type and individual model whose dimensions, firmness, removal design and features best match your anatomy, comfort and priorities.

How to choose between a menstrual cup and disc

Start with the features most likely to affect your comfort and confidence rather than asking which product is “best”.

If this matters most...	You might start by comparing...
A wide choice of lengths and cup shapes	Menstrual cups
A flatter, higher internal fit	Menstrual discs
A low cervix	Short cups and discs, compared individually rather than assuming one category is automatically better
A high cervix or difficulty reaching products	Longer cups or products with easy-to-reach removal features
Bladder sensitivity or pressure	Softer or differently sized cups and discs
Penetrative period sex	A disc specifically approved by its manufacturer for this use
Heavy flow	Higher-capacity products only after narrowing by fit
A more structured reservoir during removal	Menstrual cups
No cup-style seal	Menstrual discs

You can also browse our Shop by What Matters to You page for options grouped around high or low cervix, heavy flow, sensitive bladder, activity, period sex and beginner-friendly choices.

Can you use both a menstrual cup and disc?

Yes. You do not need to choose one product forever.

Some people prefer a cup for exercise or overnight wear and a disc for period sex or particular days of their cycle. Others use one product at home and another while travelling. Your preferences can change with your flow, activity or anatomy over time.

If both products suit you, there is no reason you need to use the same type every day of every cycle.

Frequently asked questions

Which is easier for beginners: a menstrual cup or disc?

There is no universal answer. Some people find it easier to feel whether a cup has opened, while others prefer inserting a disc without needing to create or release a cup-style seal.

Your anatomy, dexterity and comfort with the removal method can influence which feels easier.

You can browse our beginner-friendly period care options or take the Find Your Best Fit Quiz.

Which is better for a low cervix?

A shorter cup may suit some people with a low cervix, while others prefer a disc. A disc is not automatically better simply because it sits higher. Its dimensions still need to suit the space between the vaginal fornix and pubic bone.

Browse our low-cervix period care options.

What about a high cervix?

A longer cup can be easier to reach if your cervix is high. For discs, a high cervix may make removal more difficult, so a tab, loop, ring or other accessible removal feature may be useful.

Browse our high-cervix period care options.

Do menstrual discs always hold more than cups?

No. Capacity varies substantially between individual products and a disc's flexible reservoir may not retain its full stated volume once positioned.

Compare specific models rather than assuming every disc has greater usable capacity.

Which product is less messy to remove?

A cup's structured body may make it easier to keep upright during removal. A disc's shallow flexible reservoir may move or spill more easily, particularly while you are learning.

Removal features and technique can make a substantial difference, so this varies between products and users.

Do menstrual cups use suction?

A menstrual cup opens and forms a seal against the vaginal walls. People often refer to this as “suction”, although fit depends on the cup's seal, shape and interaction with the vaginal walls rather than suction alone.

A menstrual disc does not rely on this type of seal. It is supported by the vaginal fornix and pubic bone.

Can menstrual discs auto-dump?

Some can for some users. Auto-dumping describes a disc releasing some fluid while you bear down on the toilet. It depends on fit and anatomy and does not happen for everyone.

Repeated leaking during normal activities is not the same as auto-dumping.

Can I switch between a menstrual cup and disc during my period?

Yes. You can use different products at different times provided each one is cleaned, stored and used according to its instructions.

What if my cup or disc keeps leaking?

Repeated leakage does not necessarily mean you need greater capacity.

Check whether a cup has opened, whether a disc is positioned beneath the cervix, whether the product fits your anatomy and whether it is becoming full for your flow.

If the problem continues, try our menstrual cup troubleshooter or menstrual disc troubleshooter.

Need help choosing?

Not sure whether a cup or disc is more likely to suit you? Take our Find Your Best Fit Quiz.

Know what matters to you? Browse Shop by What Matters to You for options grouped around cervical height, heavy flow, sensitive bladder, period sex, activity and beginner-friendly needs.

Want to compare individual products? Use the Menstrual Cups Comparison Chart or Menstrual Disc Comparison Chart.

Still comparing all your options? Visit the Menstrual Products Comparison Hub.

The bottom line

Menstrual cups and discs both collect menstrual flow, but their fit, positioning and removal methods are different.

A cup opens within the vaginal canal and forms a seal against the vaginal walls. A disc sits higher, with its reservoir beneath the cervix and its rim supported by the vaginal fornix and pubic bone.

The most suitable option is the one whose dimensions, position and features make sense for your anatomy, flow, comfort and lifestyle. If the first cup or disc you try does not suit you, that does not mean every product in that category will feel the same.