Why it's important you only wear BREATHABLE period underwear.

How Does Knicked Swim Work?



As a mum with daughters, my mission was to make the transition from pre-puberty to periods easy, safe and stress free without the need for single-use disposables which are so uncomfortable, and such a massive problem for the planet.

There were no tween or teen period undies available on the market (in pre-period / light absorbency or heavy absorbency period underwear) so I set about doing lots of research into materials and technology and produced both a pre (light absorbency) and period (heavy absorbency) range of underwear that was designed especially for a girls body shape (from tween to teen, approx 8-18) that was also super comfortable and looked just like regular underwear..

Knicked pre-period underwear prevents the worry of finding out menarche (a first period) has started by stains on clothing or worse and once regular, trying to change pads in a busy school toilet cubicle with very little privacy wouldn't be pleasant, especially for the many girls having to manage periods in their primary school years.

Knicked period underwear, sleepwear and swimwear makes every day (period or not) just so normal and easy. Pop on a pair in the morning and you’re 100% protected and ready for the day.

Ideally a mix of both for girls already experiencing their periods.

Our Pre-period/light absorbency are ideal to wear every day for girls who haven’t had a period yet but have started puberty. They will hold 5mls of liquid equivalent to 1 soaked pad/tampon making them perfect for that discharge (which thickens and is very noticeable 6-12mth prior to the arrival of a first period) or on those light days either side of a regular period.

Our Heavy Absorbency are a girl’s best friend on heavy days or overnight holding a staggering 40mls that’s equivalent to 6 regular soaked pads or tampons, giving you up to 10 hours of protection so you never need to hide the white sheets or spend your day worried about leaks or rushing to change a pad or tampon.

YES, yes, yes!! Knicked period underwear contains unique antibacterial properties that prevents bacteria from building up and using our exclusive charcoal infused mesh layer eliminates any odour. Knicked, unlike some other period underwear on the market, does not use nano-silver or PUL so they are 100% safe.

Sanitary products sold in Australia do not have to disclose all the compounds used in their products, we do know that they contain plasticisers, pesticide residues, dioxins and fragrances, these together with other undisclosed toxins some believe may accumulate in the body over time.

YES!! Thanks to our unique layers inbuilt in our Heavy absorbency underwear,

which can hold up to 40 mls so you are covered for a whole school day and onto a dance/sports class afterwards or for overnight regardless if you sleep like a starfish, log or curled up like a cat, you’ll never have to worry about bulky pads that scrunch, move and leak through the night.

Absolutely NOT.. I worked hard to create styles that look and feel just like regular teen underwear rather than modifying an adult’s range, using only the highest quality fabrics.

Truly, nothing about puberty or periods should ever be called gross but Knicked underwear will stay amazingly dry due to its construction and advanced fabric selection, most girls say they feel drier than when using disposable pads. This is due to the different materials sourced which draws moisture and liquid from the top layer and then traps it in the middle absorbent layers between waterproof fabric underneath. Our underwear was specifically designed for girls with a higher arch at the front and complete protection up to the waistband at the back giving total coverage unlike other brands.

No you don't! Our swimmer bottoms are heavy absorbency so swim without fear of leakages! That said, if you're on a very heavy day and have worn them for awhile before swimming the gusset will be full so you need to be mindful when exiting the water not to squeeze or lift the swimwear from your body otherwise tainted water will spill from the leg holes. We recommend on heavy days rinsing the swimwear before entering the pool or if in the ocean/lake squeezing the gusset before exiting the water (we promise this won't attract sharks).

KNICKED is proud to be the leaders in so many areas, and we were the first to design period underwear with absorbency up to the back waistband, first to design dance period underwear, the first to bring MODAL period underwear to market, amongst many other accomplishments!

Not all period underwear is created equal, and it's really important that you know what you're putting on your daughter's nether regions! But WHY should we be wearing BREATHABLE period underwear? It's simple - to prevent rashes and irritation, or worse - infection, especially if you're prone to those issues which some people are.

According to Dr. Alyssa Dweck, MD, and an ob-gyn in New York, "Breathability is really important!"

Just like the other material that we commonly use in our knickers ~ Micromesh~ it's lightweight, and very breathable ... PLUS, it prevents sweating - so your daughters can feel dry all day.

Knicked makes every day (period days and the in-between days) just so normal and easy, eliminating the bulky and sweaty feeling brought about by pads and tampons.

In most cases, we have this common type of bacteria, which is called Staphylococcus aureus, that lives on the inside of our nose, and it's harmless. However, if it enters the bloodstream it's a major problems. When this type of bacterium becomes enlarged and enters the bloodstream, it releases or becomes TSS toxins. 

Tampons that are left in the vagina for a long period of time! YIKES!

Watch this video from Goalcast about a supermodel who got both her feet amputated due to Toxic Shock Syndrome brought about by wearing a tampon.

We've written a blog post about period toxicity, and how safe our knickers are - click here to learn more!

With Knicked, you don't have to worry about TSS and other environmental issues. You can wear, wash and reuse them over again - they will last up to 2 years if cared for properly. Make sure that you wash them after every wear to prevent stains from building up. Also, toss them in the washing machine with like-coloured clothes (again, to prevent stains). It is also VERY important that you don't use fabric softeners as it affects the waterproof membrane, and it's also bad for the environment.

Modal is breathable and silky smooth to the touch and boasts impressive resistance to shrinkage and pilling. It's approximately 50% more water-absorbent per unit volume than cotton. It’s designed to absorb the dye and stay colour-fast when washed in warm water, which makes it a popular choice for underwear and activewear. It was originally developed in 1951 in Japan, and some Modal is still make there.

We offer our Eco Modal in in both light and heavy absorbency, and they can be worn either all day or overnight for total protection without the need for bulky pads or awkward tampons.


The layers in the gusset of the swimmer bottoms work to trap and absorb blood. We want you to feel 100% confident in your Knicked Swimwear so we've added an extra FOURTH layer to ensure protection from leaks! We do advise if you're experiencing a heavy flow to put them on just before swimming to ensure 100% protection OR if worn for a few hours prior to swimming giving them a quick rinse to release all the trap blood.

Our bikini bottoms are super absorbent, and hold up to 4 tampons worth of blood. You won't lose this much blood while swimming so don't worry but if wearing them all day out of the water, we do recommend giving them a quick rinse before swimming again as the gusset may be quite full.

Yes! Our StopLEAK swimwear is amazing, but with all our period swimwear, while they’re heavy absorbency and can last a full day at the beach or pool, you need to wait until touch-dry (4-5 minutes) after swimming, to allow our super-fast drying swimwear to dry, before sitting on a white towel!


In Australia around 20 billion sanitary products end up in landfill and our oceans each year. Did you know that just one packet of pads have the equivalent to 4 plastic shopping bags? 90% of every sanitary pad is plastic and it’s estimated that it takes between 500-800 years to biodegrade!! It’s documented that every female could in a lifetime purchase and use 10,000 disposable sanitary products, thats around 130kg of period waste per person which all ends up in landfill and oceans, that is until now –Knicked is the most effective underwear to eliminate period wastefor girls who are beginning their journey though to womanhood. We all wear underwear every day, so replacing it with Knicked will not only save money, embarrassing leaks but also protect our beautiful planet.

Please click here to read more about the Environmental Impact


Knicked Eco-Modal Hipsters are a slim fit sitting low on the hips.

Hipsters Waist Comment

10 - 12 60 - 65cm
girls clothing 8/10 or womens xxxs

12 - 14 65 - 70cm
girls clothing 12/14 or womens 6/8

14 -16 70 - 75cm
girls clothing 14/16 or womens 10

Knicked MicroMesh Sports are more generous in size due to the stretch and higher waist.

Please order one size smaller if you currently wear our Eco-Modal Bikini knickers..

Sports Waist Comment

10 - 12 65 - 70cm girls clothing 10/12 or womens 6/8

12 - 14 70 - 75cm

girls clothing 14/16 or womens 10

14 -16

75 - 80cm

girls clothing 16+ or womens 12/14

A quick rinse after wearing will prevent staining, then toss in the washing machine with like coloured clothing but please NO fabric softeners as it harms the waterproof membrane and is also bad for the environment, then hang out to dry on the line. Due to the many layers of material they may take longer to dry than regular lingerie so give them a full spin cycle as this will decrease the drying time.

Why you shouldn't use fabric softeners on your knickers?

According to mindbodygreen, fabric softeners are made of petroleum-based ingredients which can be very toxic to marine life because they're not easily biodegradable. So, a big no-no for fabric softeners.

Knicked underwear contains only unique antibacterial properties that helps prevent bacteria from building up. Our charcoal infused mesh layer also eliminates any stinky odour, and our knickers do not use nano-silver or PUL, too, so they're 100% safe to you and to the environment alike.

Knicked knickers and swimwear bottoms have been thoroughly researched, tested, approved, and are SAFE for your daughters, PLUS they save the environment from years and years of sanitary products ending up in landfills and our oceans. Learn more about the environmental impact of menstrual products here

Cold or under 30o wash is preferable. Do not tumble dry or iron

You can wear, wash and reuse your Knicked underwear over and over again. Our Heavy Absorbency if cared for correctly will last up to at least 2 years but over time they will become less absorbent. If that happens you can still wear them on light days and just purchase new pairs to cover your heavy days. You are still WAY out in front cost wise compared to all the pads/tampons you would have purchased and put into landfill.

Knicked Pre-period/light absorbency can be used for more than 2 years.

Under Australian Health Guidelines, personal intimate hygiene products are unable to be returned but we are always here to help and want you to be happy with your purchase so please email info@knicked.com.au and include all your information, so we can quickly locate and reference your order.

Unlike other companies we do not use a sanitary label in the crotch, as it leaves a sticky residue from the glue, which may contain chemicals and goes against our environmental philosophy so if the underwear is worn (unless it’s a pair from a 40 day free trial) we are unable in most circumstances to return it back into stock.

We know Knicked is superior to anything else in the Period Underwear Market but we want you to have the peace of mind that if for any reason you are not happy we will refund in full ONE pair of Knicked underwear (excluding postage to or from) to first time customers as a “try and see”. We are confident all girls will find Knicked as comfy and amazing at its job as we do.

Please note, if a bundle is purchased only ONE pair can be accepted for a refund at its reduced cost.

Ask us anything!

Send us an email at:info@knicked.com.au