What is period underwear?
- florianegoest
- 4 days ago
- 3 min read
Period underwear looks and feels like a normal pair of undies, but their gusset is a tiny bit thicker to absorb any liquid and lock it in.
Flo Collection's gusset has 3 layers:
the top layer wicks away moisture to keep the wearer feeling fresh and dry. We custom print this, so you can see what's "flowing on"
the invisible core absorbs and locks in the liquid
our buttery soft modal forms the main fabric of the underwear

How do I wear period underwear?
You can wear period underwear for additional coverage with your inserted products (like cups or discs or tampons), but you can also wear the period underwear by itself.
When can I wear period underwear?
Flo Collection period underwear can be worn by anyone who would benefit from having more absorbent underwear.
That includes support for LBL (light bladder leakage), for postpartum bleeding, for increased discharge (e.g. from pessaries during fertility treatment), or you can wear them during workouts to feel dry and protected.
We love wearing them in the lead up to our periods too, to catch any potential spotting.

Is period underwear invasive?
The great thing about period underwear is that it is non invasive. Simply wear it instead of your usual underwear and you're good to go!
Our founder Flo was a fan of cups, but could not always use them, because they seemed to exaggerate her period pain.
If you can handle cups and discs, but want an extra piece of mind, you can use period underwear to catch any potential drops.
Period underwear doesn’t stop your period blood, you'll feel the flow of menstruation leaving your body. Pretty cool!
How long can I wear period underwear for?
If your flow is considered “regular”, which means you'd need to change your tampon every 4 hours, you can use one pair of Flo Collection period underwear for up to 12 hours. One pair holds at least as much liquid as 3 tampons.
If your flow is lighter, this time off course expands. We like to wear them on the days leading up to our periods too, in case any of spotting.
How do I know that I should change my period underwear?
You'll know when it's time to change, because the moisture wicking top layer will have worked overtime and you won't feel as nice and dry anymore.
Is period underwear hygienic?
Yes, just wash and dry them properly. Don't wear them while damp and make sure to air dry them before putting them away.
Do not use bleach or fabric softeners.
How many pairs do I need?
It totally depends on your preference and if you want to use them as a backup with your inserted products, or bleed directly into them only.
Keep the timing in mind too - while they can easily be washed in the washing machine with your standard wash loads (just keep it below 40 C), we do not recommend tumble drying to preserve their fit. You'll need to factor in to air dry them.
Let's calculate...
...If you plan to only use period undies, we’d recommend at least three pairs. One to wear while one is in the wash and one is drying.
If you’re away from a washing machine during the day and have a heavier flow and change throughout the day, you’d likely need more.
The great thing about Flo Collection underwear is that they are comfy and look good, so you could also just add them into your standard underwear rotation to justify stocking up.
How to I care for my period underwear?
Simply give them a rinse in cold water (to help the blood evacuate) and wash them in the washing machine.
Hang them to dry and do not use harsh chemicals like bleach. We also do not recommend fabric softeners as they might mess with their ability to soak up the blood!
What does "well made" mean for Flo Collection?
We use only high quality, toxin free materials and have tested our patented product on real bodies with real periods.
Quality is at the core of our brand and this extends to the the amazing humans that make our garments.
Being Australian made means we can be sure that everyone is paid fairly, their place of work is safe and we do not cut corners,
We cannot compete with brands that are stocked on supermarket shelves when it comes to price, but they cannot compete with us when it comes to producing a high quality garment that looks and feels great without relying on underpaid labour and substandard materials.
