Question 1

Why should I use period panties?

Accepted Answer

Our period-proof panties are designed to keep your periods and sneeze leaks safe. But unlike disposable period products such as tampons and pads, you wear period panties again and again. Just like your regular underwear.

Question 2

How do period panties work?

Accepted Answer

It’s science, period. Our period-proof underwear absorbs menstruation blood, prevents leaks, controls odour and wicks moisture. The secret is Engineered Leak Tech™ - patented three-layer technology with built-in protection placed in the gusset of the underwear.

Question 3

How much blood can period panties hold?

Accepted Answer

Our period panties come in many variations and are designed with different absorbency levels for every period - from light to heavy. A lot like disposable menstrual products, in fact. Depending on the model, our underwear can hold from 5 ml to 50 ml of blood, which equals up to 5 tampons’ worth.

5 ml Mini ≈ ½ tampon/1 panty liner
10 ml Light ≈ 1 tampon/pad
20 ml Medium ≈ 2 tampons/pads
30 ml Mid-high ≈ 3 tampons/pads
40 ml High ≈ 4 tampons/pads
50 ml Super ≈ 5 tampons/pads

Question 4

How can period panties prevent leakage?

Accepted Answer

Our period-proof underwear is designed to keep you comfy and dry with an innovative built-in protection in the gusset - the patented Engineered Leak Tech™. It’s a completely leak-proof solution with three layers:

A wicking layer that efficiently transports the blood to the absorbent layer and keeps the surface in contact with the body dry.
An absorbent layer that holds the blood securely and undetectably, with an anti-odour and antimicrobial treatment.
And finally, a barrier layer that prevents any leakage of body fluids, while still being breathable.

In addition, our period underwear has a perfected fit that lets the Engineered Leak Tech™ work its magic. The fit hugs your body, securing the position of the underwear and making sure that the gusset stays in its place.

Question 5

Can I use period panties for a heavy flow?

Accepted Answer

We design period-proof underwear for all levels of bleeding, from light to heavy periods. The highest absorbency level is called Super and can hold up to 50 ml, which is equivalent to 5 tampons or pads. Heavier bleeding than that is unusual, but we’re all different. And that’s just how it should be.

If you are worried about bleeding more, we recommend that you start by wearing your period underwear at home during a heavy day. That will put the underwear to the test - and put you at ease while you figure out how it works.

Question 6

Should I combine the period panties with other protection?

Accepted Answer

Sometimes one plus one equals three, and sometimes it doesn’t. As long as the absorbency underwear level is matched with your flow level, additional menstrual protection isn’t necessary. Our period-proof panties are engineered to keep you dry and safe all day.

However, some like to combine their period panties with other menstrual protection over the course of the entire menstruation cycle. This is of course a deeply individual thing, and we encourage you to explore and find your own optimal solution.

Question 7

What materials are period underwear made of?

Accepted Answer

In our micro range, 83% of the shell fabric is recycled polyamide and 17% is elastane. The fabric has an OEKO-TEX Standard 100 certification. To get the right elasticity in the waist, we use silicone.

In our organic cotton range, 79% of the shell fabric consists of organic cotton blend and 21% is elastane. The fabric has an OEKO-TEX Standard 100 certification.

Question 8

What's the sizing like for period panties?

Accepted Answer

We recommend you go for the same size as you usually choose. Our period-proof panties are designed to feel snug at first, and then relax with washing and repeated wear for that perfect fit.

See our size guide here.

To make sure that you find your perfect fit, our underwear comes in a wide range of sizes.

Women: XS, S, M, L, XL, 2XL, 3XL.

Teens: 134/140, 146/152, 158/164, 170.

Question 9

Can period panties replace disposables?

Accepted Answer

Our period-proof underwear is engineered to replace disposable products and menstrual cups completely. Thorough testing has shown that it's unnecessary to use a tampon, pad or a liner when wearing our panties.

If you prefer, you can combine them with disposables and wear the underwear as a complement. For example, when using tampons or menstrual cups our period-proof underwear with a low absorbency level (5 or 10 ml) can be worn as a backup in case of leakage.

Question 10

Can period panties be used for incontinence?

Accepted Answer

These period panties are primarily developed to absorb menstruation, but are also perfectly good at keeping small urine leakages and sneeze leaks safe. Bless you!

Our period panties are not classified as medical products and are therefore not intended to be used for any medical purposes, such as treatment, relief of or compensation for a possible illness, injury or disability. If you experience medical problems, you should therefore firstly seek out medical guidance from a healthcare professional.

Question 11

Why is period panties more expensive than regular panties?

Accepted Answer

You might think this is just regular - albeit very comfortable - underwear. But it’s not. Our period-proof panties have been engineered through a unique combination of competence and technique where underwear experts, femcare scientists and material innovators have worked closely together.

The result is the patented Engineered Leak Tech™ technology that has been tested and verified over several years’ worth of research and development. It consists of three layers of advanced, high-performance, functional materials.

Question 12

Does period panties smell?

Accepted Answer

This is one of our most commonly asked questions. And No. They don't. The anti-odour function in our panties works in two ways:

1) antibacterial so that bacteria cannot multiply and

2) odour eliminating so unpleasant odours cannot develop.

The anti-odour treatment is applied to our wicking layer and absorbent layer of the gusset.

Question 13

How many hours can I wear the same pair of period panties for?

Accepted Answer

Our period-proof underwear is tested extensively and lasts for up to ten hours of wear.

All of our models have the capacity to hold a large amount of menstrual blood. The High period-proof panty can hold up to 40 ml of blood - which is quite a lot, since the total menstrual fluid loss per period is on average 35 ml.

But each body is unique, so the most important thing is that you choose the absorbency level that matches your personal flow level.

Question 14

How many times can the period panties be used and washed?

Accepted Answer

We believe that good things should last for a long time, and our period panties are made to last for at least 50 washes. So if your underwear is worn and washed once per menstrual cycle, they will last for around four years – which is way above industry standards.

The lifespan of a pair of panties is determined by the Engineered Leak Tech™. The antibacterial and anti-odour treatment of the Engineered Leak Tech™ tends to lose a little bit of effectiveness after 50 washes. The absorbing function itself though is likely to last longer, as well as the fabric, form and fit.

Question 15

How many period underwear do I need?

Accepted Answer

Our period-proof underwear is washable and can be used again. And again. We recommend starting with 3-5 pairs: that way, you’re covered for an entire menstruation cycle without having to do too much laundry. But every person is unique, with individual flow levels and laundry facilities. So, you can always start with 1-2 pairs to complement your usual protection. That‘s a good way to ease into using a new product - and to find out what works best for you.

Question 16

Can I use period underwear during nighttime?

Accepted Answer

Yes, very much so. Regular period-proof underwear will most likely do the job perfectly well during the night. But, depending on your flow level and sleeping position (some of us just can’t keep still, right?) you might need a little extra protection when sleeping. And that's why we created night panties, that come in two different silhouettes:

- Engineered Boxer Super Period Proof

- Engineered High Waist Super Period Proof

The unique thing about our night underwear is the length of the gusset – it guarantees safety when you sleep. It doesn’t matter if you sleep on your back or snooze on your stomach (or maybe both?). The blood will stay exactly where it should, all night. Sweet dreams!

Question 17

Can I wear period panties even after giving birth?

Accepted Answer

Our period panties are great for taking care of your post-partum bleeding as well as the little leaks you might experience after giving birth. Remember to always keep a close eye on the condition of your post-partum bleeding, as it is an important indicator of your uterus’s health. If you need to change after just 1-3 hours (depending on the panty’s absorption level) or have any other concerns – always consult the medical care.

Question 18

How do I know when to change period underwear?

Accepted Answer

Our period panties don't work the same way as disposable tampons or pads do, so you don't normally change them during the day. Our most absorbent period panty can hold up to 50 ml, which is a very large amount of blood - most women bleed 35 ml on average during their period.

Just choose the absorbency level that meets your individual needs (or a higher one if you want to feel extra safe). Then wear the panties for the whole day - or night.

Over time, you’ll get to know how your period panties deal with your own unique flow, and how you can adapt the absorbency level for different days of your cycle. Here are some signs to look out for, so that you know what level you need:

The weight of the gusset: the heavier it is, the fuller it is
The amount of blood traces you see on the wicking layer (the layer closest to the skin)
The stiffness: if the gusset is full, it might feel a bit stiff, as well as thicker than when freshly-washed

Question 19

How do you wash period underwear after use?

Accepted Answer

Handle your period-proof panties with care and they will last for a long time. But it’s not that complicated: the only additional step you need to take, compared to washing your regular underwear, is the pre-rinsing.

After you’ve worn them, rinse the panties until water runs clear and then wash at max 40°C. You can wash them together with other garments. Fabric softener should be avoided, as should the tumble-dryer. We recommend that you use a separate laundry bag to give your panties some extra care. Period underwear love fresh air and prefer to be hung up to dry inside out.

Question 20

Is washing them in 40°C really enough to keep the period underwear hygienic?

Accepted Answer

We recommend you wash your period underwear at 40°C, as it will help them last longer while maintaining the function and performance of the underwear. The layers in the gusset of the underwear are treated with an anti-odour and antimicrobial treatment that prevents the growth of bacteria. This means that you can wash your period underwear in cooler temperatures and still keep them clean and hygienic.

Question 21

How do I store my period panties if I can't wash them immediately?

Accepted Answer

Sometimes life happens, and there's just no way to get everything done the way you planned. But no worries. If you can’t wash your panties immediately, just rinse them right after use and hang them up to dry. After that, just put them in your laundry basket along with your other clothes and wash them when it suits you.

We recommend that you use a separate laundry bag to give your panties some extra care. A good idea is to put your panties in our stylish on-the-go pouch, on-the-go pouch, made of water-repellant material, until you wash them.

Question 22

Can you put period panties in the dryer?

Accepted Answer

Your panties won’t be harmed if they happen to end up in the dryer once or twice. But with that said, repeated tumble drying will reduce the performance and structure of the underwear. So do your best to avoid it – your panties will thank you!

Question 23

How does the 45 days free trial offer work?

Accepted Answer

Being female should be hassle-free. That’s why we offer a free trial for 45 days when you buy our period underwear for the first time. Just contact our customer service, tell us about your reasons for wanting to return the product, and we’ll refund you - just like that.

Please note that the trial warranty only applies when you try a product for the first time.

Question 24

Are the period panties free from PFAS?

Accepted Answer

All our period panties are produced without adding any PFAS related substances.

Question 25

Are Female Engineering's panties treated with anything?

Accepted Answer

When we produce our panties, we use an anti-bacterial and odour-preventing treatment in the absorbent gusset, called Agion Active XL, that contains the antimicrobial substances silver copper zeolite and silver zeolite. The treatment is one of the best currently available. Our period panties are certified by OEKO-TEX®, which means that the products have been evaluated for the content of substances harmful to health.

Why do we use this treatment?
We do this to prevent bacterial growth that leads to the panties starting to smell, which is the biggest concern we have identified in our customer surveys regarding period-proof panties.

Antimicrobial substances are strictly regulated in EU law and the substances used, silver copper zeolite and silver zeolite, have been approved for use in textile products.

Question 26

Can I return them if they don't work for me?

Accepted Answer

You can return your Female Engineering products if they are still in their original packaging. Everything is in accordance with our specific return policies. We will not be able to accept returns if the seal of the product has been opened and/or the product has been used.

How to make a return.

Question 27

How do I make a return?

Accepted Answer

To return the unwanted items by postal services, please send the items together with the Delivery Returns Form (enclosed with your order) to us within 60 days on which you received the items.
We recommend you to use the same box as you received your items in.

You can read our returnpolicy here

Question 28

Can I find Female Engineering period underwear in stores?

Accepted Answer

Yes, our products are available in selected Lindex stores in Sweden, Finland, Norway, Estonia, Lithuania, Latvia, Slovakia, the Czech Republic and the UK. Find all stores here.

Question 29

Should you use intimate care products?

Accepted Answer

Some prefer to just use water, while others like intimate care products. It’s up to you. Water has a higher pH-value then the acidic climate of the vulva, so, as a result, cleansing with water alone can dry the skin or irritate the vulva. By using the neutral Engineered Intimate Wash you can avoid feeling dry. If you are sensitive, or just not a big fan of a water-based wash, we recommend the Engineered Intimate Oil – it can be used as a protective moisturiser or a natural cleanser, with or without water.

Question 30

Vaginal dryness – what can you do?

Accepted Answer

Vaginal and vulval dryness can affect women in all stages of life – during pregnancy, menopause, hormonal imbalance or as a side effect of birth control. Vaginal dryness can affect both the vagina and the vulva and can lead to discomfort, soreness, chafing and burning in and around the vulva. Here, Engineered Intimate Oil and Engineered Intimate Balm can come in handy and help relieve the symptoms in the vulva.

Both products contain Oat oil, which locks in moisture by forming a physical barrier to protect the skin. They also contain Bisabolol – which calms and reduces irritation – along with moisturising almond oil and vitamin E. If the dryness feels severe or is experienced in the vagina, we recommend that you consult a gynecologist.

Question 31

Are your intimate products free from perfume?

Accepted Answer

Yes, our intimate care products are free from both synthetic and natural perfumes. We think that perfume in intimate care is pointless, and it can also irritate the vulva – a delicate part of your body. That’s why our products are perfume-free.

Question 32

Why does the vulva PH matter?

Accepted Answer

While the vagina is self-cleansing, the vulva could use some help. But regular soap often has a higher pH level than your vulva and could upset its pH balance.

Why does this matter?

Maintaining a good pH balance around your vulva helps to protect against infections and irritation.

How do you do that?

The Engineered Intimate Wash is water-based with a balanced pH level that matches the acidic environment of the vulva.

The Engineered Intimate Oil is oil-based without any pH level.

Using these products as part of your vulva care routine is a good way to maintain the pH balance.

Question 33

Vulva vs vagina – what’s the difference?

Accepted Answer

You’ve probably heard that the vagina is a self-cleansing organ – which is true. However, the vulva is not. The vagina is the inner muscle canal, while the vulva is all of the external parts that you can see. Our Engineered intimate products are developed for the vulva, not the vagina. Experts recommend that you wash your vulva with a mild cleanser (Engineered Intimate Wash) or an oil-based product (Engineered Intimate Oil).

Question 34

Why are oat and almond oils beneficial in intimate care?

Accepted Answer

Oat (Avena Sativa Kernel) Oil is protective and occlusive – meaning that it forms a physical barrier that protects the skin, locks in all the moisture and prevents further dryness. Almond (Prunus Amygdalus Dulcis) Oil has smoothing and softening properties – great if you are feeling sore or are experiencing dry skin.

Question 35

What is Postbiotic marine extract?

Accepted Answer

Postbiotic marine extract takes care of and communicates with the bacterial ecosystem to make sure that everything is in balance.

Question 36

What is Allantoin?

Accepted Answer

Allantoin promotes cell renewal and counteracts dryness. It is soothing and reduces irritation. This makes it a great ingredient to calm possible symptoms of dryness in the vulvovaginal area.

Question 37

About our partner: Bodyline

Accepted Answer

Our partner Bodyline is a joint venture between MAS Holdings, Triumph International Germany and Mast Industries USA. They are the market-leader in producing fitted garments that provide superior next-to-skin performance, with their greatest strength being their employees.

They are a collaboration driven, concept-based hub for innovations, and their mission is to create value, delight, and inspire. They produce apparel for women in all shapes and sizes, from concept to carton.

With a purpose of being changemakers and with a goal set to find more sustainable solutions in every part of the process, the company thoughtfully produces our high-performance period underwear in one of their factories, based in Sri Lanka. The company has over 13 000 employees across five facilities in Sri Lanka and India, and the majority of the workforce is female.

Question 38

About our supplier: Svenska Krämfabriken

Accepted Answer

Svenska Krämfabriken is a market leading manufacturer, R&D center, brand owner and developer in the fields of beauty, health, and wellness. It was founded in Sweden in 2014, and its production facilities and offices are still based in the country.

In just over five years, Svenska Krämfabriken has grown from 15 to 120 employees. The company is still owned and managed by its original founders. Today, the Borlänge factory is Svenska Krämfabriken’s main production site and R&D center – where our Engineered intimate products are made.

Question 39

How can the menopause clothing relief hot flushes and night sweats?

Accepted Answer

Our menopause clothing is specifically designed to keep you comfortable and dry during the menopausal phase. Incorporating a unique combination of complex yarns and the science based patented solution - Anti-Flush™ Technology, here's how it works:

1. As the body releases heat, the fabric will absorb and store the heat.

2. The fabric wicks away moisture and cools the skin, reducing the impact of hot flushes and sweats.

3. During post-flush chill the fabric releases the heat back to the skin.

4. The body temperature is regulated, keeping you fresh all day and night.

Question 40

How does menopause clothing work?

Accepted Answer

Our menopause clothing is made with patented Anti-Flush™ Technology to provide relief from hot flushes and night sweats during menopause. When worn close to the skin, this innovative technology effectively reduces hot flushes and ensures optimal comfort.

Question 41

How do you wash menopause clothing?

Accepted Answer

To maintain the quality of our menopause clothing, we recommend washing them at 40°C. It's best to wash them with similar colors, avoid tumble drying, and refrain from ironing. We recommend that you use a separate laundry bag to give your menopause clothing some extra care.

Question 42

Is the function in your menopause clothing the same as other moisture-wicking sportswear?

Accepted Answer

Sportswear with moisture-wicking features isn’t as effective for hot flushes. It´s because sportswear is not designed to manage hot flush perspiration. During a workout heat is evenly distributed during a longer session, whereas menopausal hot flushes involve intense heat and focused sweating for shorter durations.

Our menopause clothing has been specifically developed for this short-term rise and cool in temperature — managing the whole cycle from hot sweats to post-flush chills.

Question 43

Can I wear menopause clothes both day and night?

Accepted Answer

Absolutely! Our Engineered Anti-Flush™ Tee and Anti-Flush™ Tank Top are versatile options suitable for both daytime and nighttime wear.

Question 44

Are the Female Engineering menopause clothing treated with anything?

Accepted Answer

When we produce our menopause clothing, we use an anti-bacterial and odour-preventing treatment called HeiQ Pure TAG that contains an antimicrobial substance (silver chloride). The treatment is one of the best currently available. Our products are certified by OEKO-TEX® STANDARD 100, which means that the products have been evaluated for the content of substances harmful to health.

Why do we use this treatment?
We use this treatment in order to reduce the growth of bacteria and reduce odour from recurring hot flushes and sweat.

Antimicrobial substances are strictly regulated in EU law and the substance used, silver chloride, has been approved for use in textile products.

Question 45

About our supplier: Intimo

Accepted Answer

Intimo delivers our high-performance menopause products, with the latest product innovations like Anti-Flush™ technology and cooling yarn and odour control. Being a part of MAS Holdings, they specialise in manufacturing seamless intimate apparel and sportswear with state-of-the-art technology. Their expertise in craftmanship enable us to view our products from our customers’ point of view and remain true to our promise to create products that meet women’s real needs.

Question 46

Can I swim in the period swimwear?

Accepted Answer

Yes, you can. Our period-proof swimwear is ideal for days with low to moderate flow. The gusset that is designed to absorb your period and other body fluids, will absorb water as well. After swim, rinse the swimwear until the water runs clear and gentle squeeze out excess water before wearing again and again. If you have worn if for a long time prior to swim, we suggest you rinse it before you enter the water as well.

Question 47

How does the period swimwear work?

Accepted Answer

The period-proof swimwear is designed to keep your periods and sneeze leaks safe. The secret is the Engineered Leak Tech™ - a patented technology consisting of three active layers that absorbs your menstruation and prevent leaks.

Question 48

When can I use the period swimwear?

Accepted Answer

Our period-proof swimwear is ideal as standalone protection for days with low to moderate flow, or as backup protection on heavier flow days.

Question 49

How much liquid does the period swimwear hold?

Accepted Answer

Our period-proof swimwear is ideal for days with low to moderate flow. It can hold up to 20 ml, which is up to 2 tampons/pads.

Question 50

Can I use the period swimwear in the pool? Is it chlorine safe?

Accepted Answer

Yes, you can. It is perfectly safe to use in any water. Pools, oceans, showers, lakes, rivers – you name it.

Question 51

What happens in water? Will the blood leak out?

Accepted Answer

Not if used correctly. The period-proof swimwear is designed to absorb your menstruation while you are in the water (and on land of course). It is ideal as standalone protection for days with low to moderate flow, or as backup protection on heavier flow days.

Question 52

Do I need to use the period swimwear with a tampon?

Accepted Answer

No, on your low to moderate days, our period-proof swimwear are perfectly safe to use on its own. On heavier flow days however, it is a great option to use as a backup protection with other period protection.

Question 53

Does the period swimwear smell?

Accepted Answer

This is one of our most commonly asked questions. And no, they don't. The anti-odour function in our panties works in two ways: