Period underwear is a type of reusable underwear specifically designed to be worn during menstruation (but which can be worn throughout your menstrual cycle).

The gusset is comprised of several layers that work together to absorb any liquid while keeping you feeling comfy and confident.

As period underwear can be washed and reused many times, it's a more sustainable, eco-friendly, and cost-effective method for managing your period compared to single-use products like tampons and pads.

Everyone!

At Fri Period, we cater for all ages, body shapes, and sizes.

In fact, you don't even need to get a period to wear Fri Period underwear.

They can also be worn to assist in light bladder leakage, for postpartum wear, and anyone who would benefit from having more absorbent underwear (for example, some athletes prefer to wear period underwear during their workouts).

Our founders also find Fri Period underwear more comfortable and dry than regular underwear during those hot and sweaty summer days!

Yes!

We LOVE to wear our Fri Period underwear while we sleep.

The absorbent part goes far up the front and the back, so you can sleep without stressing about stained sheets or surprise leaks.

We find it's the comfiest way to ensure a good night's sleep during your period.

Yes! In fact, even if you're not on your period they are a fantastic option for exercise.

The fabric in Fri Period underwear is breathable and moisture-wicking, helping to keep you fresh & comfy during physical activity.

Fri Period underwear are very easy to wash and care for - that's why we designed them!

After wearing them, rinse them in cool water until the water runs clear. Then, toss them in your washing machine at a low temperature, and only use detergent (avoid softener and bleach). Lay flat or hang on the line to dry.

Please click here for detailed instructions on how to look after your Fri Period products, plus some pro tips to get the most out of them.

This depends on your individual menstrual cycle and flow and how often you're able to run a wash in your washing machine. 

For many people, 3-5 pairs should be enough to last a period (although would require some washing during the period). 

If you're unsure about taking the leap to Fri Period underwear or don't know which Fri Period underwear would best suit your flow, we recommend starting with just one pair and seeing how you get on before buying more.

Your body and the underwear do a pretty good job of letting you know.

You might feel a slight sensation of dampness or notice the gusset starting to feel saturated. That’s your cue.

Most people change them in about 8–12 hours (though you can wear them for up to 24 hours), depending on flow and absorbency.

Absolutely.

Especially on heavier days (like days 1–2), using period underwear as backup can help you break free from "fear‑of‑leak" mode (though for most, they work very well on their own).

Experiment and find what feels empowering to you.

Fri Period underwear are ethically made without using PFAS or other nasty chemicals.

Here are the full details:

Main body: 95% natural bamboo, 5% spandex
Inner lining: 95% organic cotton, 5% spandex
Inner core (this part is not in contact with your skin): 80% polyester, 20% nylon with breathable PUL.

For more information about our fabric choices, click here.

Absolutely! Consider these the comfort blanket of your underwear collection.

The super soft and breathable, natural fabric provides just the right level of stretch and support.

See our size guide to help make sure you select a pair that fits you right.

We believe in keeping bodies and ecosystems happy, which is why we make them without using PFAS or other toxic nasties.

While trace environmental PFAS can be nearly everywhere, you won’t find any intentionally added or harmful chemicals in our fabrics.

Here’s the breakdown by style:

• Classic Brief → Absorbent gusset goes all the way up to the waistband in both the front and back.
  
• Boxer Brief → Runs all the way up the back + almost all the way up the front (1.5 inches shy).
  
• Low-Rise Hipster → Absorbent layer extends to the waistband, though since this style sits lower on the hips, it offers slightly less front and back spread than our other styles.
  

But it’s not just about coverage—it’s about performance. That’s where our Triple-Layer Tech comes in. Our breathable, natural fabrics work in unison to absorb and trap any fluid, keeping you confident and fresh all day (and night!) long.

✨ Plus: Our gussets are printed, which means no more stressing over stains.

So no matter your flow, Fri Period’s gusset design has you covered!

This depends on your body and flow, however here are some general guidelines.

You can wear them for up to 24 hours, but we find the sweet spot is to wear a pair during the day and then change into a fresh pair when you go to bed. If you notice any saturation, leakage or discomfort, then we recommend you change sooner.

If your flow is a bit heavier, you may need to change your Fri Period underwear more frequently.

Fri Period underwear can be worn overnight.

For most of us, our flow varies throughout our period, so you may find you can wear your Fri Period underwear for longer, or shift to the lighter absorbency model for the latter part of your cycle.

We are all different, and so exactly how we use Fri Period underwear will vary from person to person. We recommend finding a system that works best for you. 

Contact us if you need further help with this - we'd love to hear from you.

Fri Period underwear undergo stringent quality checks and are made to last, so you can expect them to last at least several years with proper care.

We haven't cut corners on making these beauties, so they are durable and robust!

We ship across the US and Australia, using compostable packaging, and most orders are packed and sent off within 1-2 business days.

We’ll keep you updated from the moment they leave our door—no guesswork needed.

We'll make it right!

If you're not happy with your Fri Period product, we'll do our best to make it right.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return or exchange.

Free size exchange for first time orders

We know it can sometimes be difficult to get sizing 100% right when ordering online. If you're happy with your products but the sizing isn't quite right, email us at hello@friperiod.com with your order number and details and we will send the right size out to you at our cost.

Please note this is available only to first time customers and for one order.

Returns

To start a return, contact us at hello@friperiod.com with your order number, the item/s you'd like to return, and the reason for the return (this feedback is valuable to us!).

Click here to read our full returns policy.

We know it can sometimes be difficult to get sizing 100% right when ordering online. If you're happy with your products but the sizing isn't quite right, email us at hello@friperiod.com with your order number and details and we will send the right size out to you at our cost.

Please note this is available only to first time customers and for one order.

valuable to us!).

Click here to read our full returns policy.