Period underwear and period products are a huge topic of conversation these days. When it comes to period underwear, there is a lot of information out there, but it can be hard to determine which piece of advice is the right one for you.

Here’s everything you need to know about period underwear. From the brands, to how they work and how to wash them and if you can wear them for swimming! I’m an avid fan of leakproof period underwear and have been wearing them for a few years now. Since having the girls I have a very heavy flow and with an active lifestyle, I need the best period underwear available. I did try reusable pads for a while, but they were not for me, especially on heavier days!
How does period underwear work?
Period underwear works by absorbing menstrual flow through special layers of fabric. The absorbent layers are usually made of a combination of cotton and other materials that can trap and hold the menstrual blood. The underwear is designed to be worn like regular underwear during the period and can be used as a replacement for pads, the menstrual cup or tampons. Some styles may have additional features such as leak-proof sides or extra absorbent layers for heavier flows.
It’s a good idea to have a range of different pairs of period underwear, so a couple of pairs for lighter flow days and a couple for heavier flow days then perhaps a pair for those medium absorbency days. Everyone has a different menstrual cycle and different flows so you have to get the right pair for you for when you need it.
What are period pants made of?
Period pants are made of a combination of materials, including:
- Absorbent layers: These are usually made of a blend of bamboo, cotton and other materials like merino wool that can trap and hold menstrual blood.
- Leak-proof barriers: Some styles may have additional leak-proof layers that can go right up to the back waistband or barriers to prevent leaks.
- Outer layer: The outer layer of period pants is typically made of soft and comfortable fabric, such as cotton, spandex, or a blend of these.
- Elastic waistbands and leg openings: These provide a secure fit and prevent leaks.
The exact composition of period pants may vary depending on the brand and style. Some styles may also include additional features, such as odour-neutralizing technology or moisture-wicking fabric.
What types of period pants are there?

There are many sizes of vegan period underwear available in a range of styles from Weekiss. The range of styles to fit your unique body includes briefs, hipsters, Brazilian, shorts and high waisted menstrual underwear. They are free of silver chloride and other biocides and made with certified organic cotton. These period panties are designed to fit snugly around the body and provide maximum protection, I’m afraid lacy thongs won’t work at this time of the month, leave them for your normal underwear days!
How to find comfortable period knickers – key features:
To properly fit period underwear, it is recommended to:
- Know your size: Use your regular underwear size as a starting point and refer to the manufacturer’s size chart for additional information such as the hip measurement.
- Try different styles: Different styles of period underwear can fit differently, so it may be helpful to try a few different styles to find the best pair.
- Consider absorbency: Choose a level of absorbency that meets your needs. Some styles offer different absorbency levels, so select the one that is right for your flow.
- Check for comfort: Look for underwear that is comfortable, has soft fabric and feels good against your skin.
- Check for leaks: Try the underwear on and move around to make sure it stays in place and does not leak. Just to add that period underwear can give extra protection to anyone with bladder leak problems.
It is important to note that everyone’s body and menstrual flow are different, so it may take some trial and error to find the best-fitting menstrual underwear.
How do you wash period underwear?
Reusable period underwear should be washed separately from other clothes, whether that be in a machine wash or hand washing in cold or warm water around 30 degrees is fine (never hot). Avoid using bleach or fabric softeners as they can damage the absorbent layers. It is recommended to use a gentle detergent but no fabric softener and hang dry or tumble dry on low heat. Some brands may have specific care instructions, so it is important to follow the manufacturer’s recommendations for the best results and to prolong the life of the underwear.

Is period underwear for teens a good option?
Period underwear can be a good option for teens, as it provides a comfortable and discreet way to manage the menstrual flow. It can be particularly useful for active teens who need a reliable solution for leak protection during physical activities. It is also a more sustainable option compared to disposable pads or tampons. However, every person’s body and menstrual flow are different, so it is important for a teen to try different products and find what works best for them.
Are period pants a sustainable option?
Yes, period underwear can be a sustainable option for managing menstrual flow as it is reusable and can last for years with proper care. Additionally, it reduces the amount of waste generated from disposable pads and tampons.
Can you get period underwear for swimming?
Yes, period underwear designed for swimming is available. They look just like your regular bikini bottoms! You can also get period proof swimsuits! These styles are typically made from waterproof or water-resistant materials to prevent leaks in the water. It is important to follow the manufacturer’s recommendations for use and care, as some styles may not be suitable for extended periods of time in the water.

Period pants are evolving all the time, they are much better for the environment, saving you money in the long run and they will soon become your favorite underwear garments! Also, don’t forget to educate the older generation or anyone that suffers from bladder leaks, period pants are the best option all around! Disposable menstrual products are soon becoming a thing of the past!
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