Period underwear is becoming a natural part of more and more women's routines. However, many women find that finding the right fit and absorbency isn't always straightforward. What works during a light period might not feel sufficient during heavier days. And what seems comfortable doesn't always fit your body well.
In this article, we'll help you step-by-step to make a choice that truly suits you, so you feel free and confident during every phase of your cycle.
Why fit and absorbency are so important for period underwear
When it comes to period underwear, many women primarily think about leak-proof properties. But comfort and confidence arise precisely from the combination of fit and absorbency.
In practice, we see that:
- A too loose period brief can shift
- A too tight fit can pinch and feel uncomfortable, and will make the product more visible under your clothes.
- Insufficient absorbency leads to uncertainty throughout the day
Good period underwear supports your body, moves with you, and offers protection at the right time in your cycle.
How do I choose the right type of period underwear for heavy periods?
One of the most frequently asked questions is how to choose the right protection during heavier days.
Understand your flow
Every period is different. Yet many women recognize these phases:
During heavy days, it's important to choose period underwear with a higher absorption capacity.
What to look for with heavy periods?
1. What is the right absorbency for heavy periods?
Choose period underwear that can hold the equivalent of multiple tampons or pads. This is explained per product in the form of drops and tampons.

2. How is period underwear constructed?
The way period underwear works is sometimes still a mystery to many people. But it's actually quite easy to explain and it all comes down to the gusset. Quality period underwear consists of multiple layers:
- A moisture-wicking, quick-drying top layer
- An absorbent core
- A leak-proof outer layer
This combination ensures that moisture is absorbed without feeling wet.

3. The best period underwear styles for heavy periods
For heavy days, many women choose styles with:
- High absorbency, such as styles with heavy, very heavy or super absorbency.
- Extra coverage at the front and back
This provides extra security, especially at night or during long days. Are you a stomach sleeper? Then try the boyshort super. This is the best period underwear for heavy periods and full protection at the front and back.
4. Use period underwear in combination with a cup or tampon
Some women choose to combine period underwear with a tampon or cup during the heaviest hours. That is a personal choice and can provide extra peace of mind. This still saves a lot of waste, namely the panty liners or pads you would otherwise use.
Realistic expectations
Period underwear can absorb a lot, but it's important to discover what works for you. It can help to test at home how long you can comfortably wear a brief before changing it.
Help with choosing the right size period underwear
The right size is at least as important as absorbency. A good fit prevents leaks and increases wearing comfort.
Why size makes such a big difference
In practice, many women notice that:
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A size that is too large doesn't fit as well at the groin
-
A size that is too small can put pressure on the abdomen
Both situations can affect how well the underwear protects.
How do you determine your correct size of period underwear?
1. Measure your hip circumference
The size is based on your hip circumference. Use a tape measure and measure at the widest point of your hips. From the size chart, you can determine the most suitable size for you based on your measurements.


2. Are you in doubt between two sizes?
Many women then choose:
- The smaller size for a snug, secure fit
- The larger size for more comfort
With period underwear, a slightly snugger fit often works better against leaks.
Different body types, different needs
What is often forgotten: no two bodies are the same.
Therefore, it can help to look at:
- How your body changes during your cycle (e.g., bloating)
- Where you are sensitive to pressure or irritation
- How much freedom of movement you need
So whether you are looking for the perfect pair of briefs for exercising, under your favorite dress, or under light clothing. There is always an option for you.
Practical tips to find your perfect match
- Start with 2-3 different styles
- Test them on different days of your cycle
- Pay attention to how long they remain comfortable
- Evaluate what works for you (and what doesn't)
Finding the right period underwear isn't always a quick or easy choice, but a process that adapts to your body and life. If you're still unsure, there's also the perfect match quiz. Based on your answers to the quiz, you'll receive advice on the period briefs that best suit you. If you still can't figure it out, you can always send us a message or email.