Menstrual cup vs. period underwear: Which is better?

Menstrual cup or period underwear? Considering switching to a more sustainable period product, but unsure which one to go with? 

Both menstrual cups and period pants have been gaining a lot of buzz over the last few years as more eco-friendly alternatives to sanitary pads and tampons. 

This blog will help you understand the differences between menstrual cups and period panties and which option is best for you! 

#1 First things first, what are period pants and what is a menstrual cup?

Period underwear is an absorbent form of clothing designed to be worn during menstruation. It’s generally made up of multiple layers of microfibre polyester which is able to soak your period blood. 

A menstrual cup is a small, bell-shaped cup that can be inserted inside your vagina to collect your period blood. Most menstrual cups today are made from medical grade silicone.

#2 Which is more comfortable?

Comfort during your period can look different for everyone. Some users find menstrual cups more comfortable because, once inserted correctly, they can’t feel them and can move freely throughout the day. Others prefer period underwear, which feels more like wearing regular underwear and doesn’t require insertion.

While period underwear can feel slightly thicker than everyday underwear due to its absorbent layers, many users appreciate its simplicity and ease of use. Ultimately, the right choice depends on your personal comfort and preferences, whether you feel more at ease with or without insertion-based products.

#3 Which is more sustainable?

Period panties can last you from 6 months up to 2 years - so you save between 90-360 sanitary pads or tampons. 

In comparison, one Asan menstrual cup can last you for up to 10 years, saving you from disposing of almost 2000 sanitary pads or tampons over the same amount of time - making menstrual cups much more sustainable and eco-friendly alternatives.

#4 Which is easier to use for beginners?

Period pants are easier to use for beginners as there is no learning curve as compared to inserting a menstrual cup. 

To use period underwear, simply wear them like you would with normal underwear – and you’re good to go!

On the other hand, menstrual cups come with a learning curve. You need to learn how to fold your cup and insert it into the vagina. After a few tries, this becomes very easy.

Many beginners have used the Asan cup and once users get used to the cup, they never look back!

#6 Can you use both menstrual cups and period pants together?

Most people who use a menstrual cup don’t need any backup form of period protection.

That said, in some cases you might want to use menstrual cups and period panties together. 

If you are new to using a menstrual cup then period underwear can be used as back-up incase of leakage as your body adjusts to the cup. Some users with very heavy flow also tend to use both together as a form of backup protection.

#7 How long can you wear each product for? 

You can wear a menstrual cup for up to 12 hours. Most cups hold 3 times as much as a regular tampon or pad, so you won’t need to change as often.

For period underwear, you will need to check the absorbance to determine how long you can wear them for. Period pants come in many different levels of absorbency – the lighter absorbency may be less bulky and more comfortable, but you would need to change it more often.

Please remember to change your period pants or remove and rinse your menstrual cup within 12 hours due to ensure safe hygiene. 

#8 Which is more affordable? How many of each do you need?

Menstrual cups are far more affordable than period underwear.

You only need one high quality menstrual cup, which will cost you between Rs.1000 to Rs.3000. And this one will last you up to 10 years.

In comparison, for every period cycle you need 4-5 pairs of period pants which will cost between Rs.1000 and Rs.2000 each. You will need to replace your period pants after roughly a year due to regular wear and tear.

#9 What materials are used in menstrual cups and period pants? Which is safer?

The Asan cup is made of Class VI medical grade silicone - which is the same material used in heart stents and breast implants. This material is certified as safe to use by medical authorities including US-FDA.

Period pants are made of synthetic materials such as multiple layers of microfibre polyester, which is a type of plastic that is able to soak moisture. As it is not a natural fabric, it can prevent skin from being able to breathe, and can in some cases cause irritation.

#10 Which is easier to clean?

Menstrual cups are much quicker and easier to clean compared with period pants.

There are two steps to cleaning your menstrual cup. In between periods, soak your cup in boiling water for 10 minutes, or use Asan’s one-drop cleanser to sanitise your cup. 

During periods, simply empty the cup and rinse with clean water, and reinsert straight away.

Cleaning period pants is a bit more time consuming. As soon as you remove them, wash period pants in cold water to remove most of the menstrual flow. Then run them in a cold, delicate cycle in the washing machine (use detergent as recommended by the manufacturer) which will ensure the blood comes out of the pants.

Finally, air dry your period underwear until completely dry before re-using. You can’t dry period pants on the radiator as this may damage the waterproof lining.

#11 Which is better for heavy flow?

Period pants made for heavy flow are made with extra layers, so they can feel bulky and uncomfortable. 

Asan has a special size for heavy flow which ensures that you do not need to empty it out frequently and it is super comfortable as you don’t feel it inside you. 

#12 Can you wear period pants and menstrual cups for swimming?

You can’t wear period pants for swimming as it will cause leaks and is unhygienic. 

Menstrual cups are perfect for swimming as they are insertable products and continue to collect your period flow while you’re in water. 

#13 Can you exercise in period pants and menstrual cups?

Yes, you can exercise using both period pants and menstrual cups. 

That being said, period pants can be quite uncomfortable whilst exercising as they will collect more moisture as you sweat. 

Menstrual cups are the most user-friendly option to use while exercising as you don’t feel it and can do whatever physical activity you like! 

#14 Can you sleep while wearing period pants and menstrual cups?

You can safely and comfortably sleep while wearing either period underwear or a menstrual cup. Both products are designed to provide reliable protection for several hours, including overnight use.

Many people find menstrual cups convenient for sleeping because they offer leak-free protection for up to 8–12 hours without the need for a change. Once inserted correctly, a cup stays in place and can’t be felt, allowing for uninterrupted rest.

Others prefer period underwear for its soft, breathable fabric and the comfort of wearing something that feels like regular underwear. It’s a great choice for those who don’t want to use insertion-based products or who prefer a more natural feel.

Ultimately, the best option depends on what makes you feel most comfortable, secure, and confident through the night.

The verdict – choose the best product for your body!

At Asan, we believe that both menstrual cups and period pants can be great sustainable alternatives to disposable pads and tampons.

Menstrual cups are often more affordable in the long run, eco-friendly, and comfortable once you get used to them. On the other hand, period pants are a convenient, non-intrusive option that can also be reused for years, making them an equally sustainable choice.

The most important thing is to find what works best for your body and lifestyle. Take the time to research, try different products, and choose what feels most comfortable for you.

Always opt for high-quality period products, whether cups or pants as they are safer for your body, last longer, and perform better than cheaper alternatives that may contain harmful materials.

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