KNOW YOUR FLOW
Absorbency Guide
Our Teen Orgaknix Brief Eco Period Underwear has a Heavy absorbency.
Check out the below guide to see how this level stacks up against our other products.
STOCK UP & SAVE: Buy 2 -get 5% off; Buy 4 - get 10% off; Buy 6 -get 15% off; Buy 8 - get 20% off
Teen Orgaknix Brief Eco Period Underwear
●●●●○ | Heavy - Check out our absorbency guide here
All-day protection. Zero fuss. Total confidence.
The Teen Orgaknix Brief is built for girls who don't want their period slowing them down. Heavy absorbency holds up to 40ml — equivalent to 4–6 tampons — so she can wear it all day at school, sport, or overnight without needing pads or tampons.
Soft organic cotton sits directly next to her skin for a breathable, comfortable feel. No bunching, no odour, no leaks. Just reliable protection that works like regular underwear.
Fits like a regular brief. If she's between sizes, size up for extra comfort. Our teen models wear sizes 8–10 and 10–12.
Organic cotton next to skin | Holds up to 40ml | Machine washable | PFAS-free | Designed for teens
Loved by mums & teens:
⭐️⭐️⭐️⭐️⭐️ "My daughter wears these every day of her period — she'll never go back to pads." – Sarah M.
Simple 30 Day Exchanges
Free Shipping over $99
Loyalty Rewards Earned with Every Purchase
Organic cotton outer fabric and against the skin. Invisible inner layer of cotton against the skin Absorbent and leakproof gusset with a moisture wicking layer against the skin
When your undies arrive, have her try them on over clean regular underwear before use to check the fit. Give them a wash before the first wear to activate the absorbency.
Then simply wear them like any other underwear. How long she wears them will depend on her flow. We recommend changing every 6-12 hours.
Step 1 Wash your Eco Period underwear before wearing / using them. This activates the EcoTech and primes it for use.
Step 2, After wearing, rinse in cold water until the blood/ fluids are mostly removed. You can do this in the shower to save water, but just do it before the water heats up past 30 degrees, as heat will set stains into the fabrics.
Step 3. Pop your undies into a delicates wash bag and into the washing machine on a cold wash. Use a liquid natural detergent.
No fabric softeners.
Step 4. Hang dry on the line outside. Line drying is best as it is kinder to the fabrics. Just don't leave them out on the line for days.
Eco Period underwear should NEVER:
Be cleansed with harsh detergents (these abrade and break down clothes which shortens their effectiveness and lifespan)
Be cleansed with fabric softeners (it's like fabric cholesterol and blocks the pathways in the fabric through which the liquid travels)
Be bleached (bleach kills everything, need we say more)
Be dry cleaned (putting the products into such a harsh environment with or without the added chemicals is bad)
Be washed in very hot water (heat breaks down the fibres and natural compounds that make these products so effective.
IS IT YOUR DAUGHTER'S FIRST TIME WITH PERIOD UNDERWEAR?
Most girls never go back to pads and tampons. Here's everything you need to know.
-
The Teen Orgaknix Super Bikini is a bikini-cut brief at 40ml capacity. The Boyshort is a relaxed short-style fit, also for heavy days and overnights, with a capacity of 40ml.
The Teen Orgaknix Brief is fuller coverage at 30ml, better for moderate days or lighter overnight flow.
If you're not sure where to start, the Super Bikini or Boyshort are the most popular first purchases.
-
Yes. All our teen styles are designed to be worn solo through a full school day.
The Super Bikini and Boyshorts hold up to 40ml for heavy and overnight flow, and the Briefs hold up to 30ml, which suits moderate to regular days.
Most girls wear one pair through the day without needing to change. If she's new to period underwear and wants extra confidence while she finds her feet, she can wear it with a backup pad (we recommend Eco Pads) until she trusts it.
Take a look at our Know your Flow page to learn more. -
Rinse in cold water after wearing, then machine wash on cold with her regular clothes.
No hot water, no fabric softener, hang to dry. They don't need to be washed separately.
Simple routine, and it takes about 30 seconds to rinse before they go in the wash.
-
With proper care, years. Our staff and some of our long term customers have been wearing theirs for over five years.
The organic cotton stays soft and the absorbent layers don't break down with regular washing the way disposables would if they were reusable (they're not, but you get the idea).
-
Yes, that's one of the best uses for the Super Bikini. The 40ml capacity is designed with overnight wear in mind. . Many mums buy two pairs specifically for overnight use.
Yes. The Super Bikini and Boyshorts Teen Brief are both popular choices for overnight wear, with 40ml capacity designed with that in mind.
The front to back gusset covers tummy sleepers, side sleepers and if she sleeps on her back.
Many mums buy two pairs specifically for nights.
The Teen briefs works well for lighter overnight days.
-
Honestly, most girls forget they're wearing them within the first hour. They feel like normal underwear.
The main adjustment is trusting that they're working, which usually happens after the first successful wear. Start on a lighter day at home so she can build her confidence before wearing them to school.
-
Check the size guide on this page. If she's between sizes, go up one.
The organic cotton fabric has a small amount of natural give, and a comfortable fit means she'll actually want to wear them. Tight underwear on heavy days is nobody's friend.
-
Yes. Eco Period underwear is PFAS-free and free from harmful chemicals.
Organic cotton is one of the gentlest fabrics you can put against skin. These are made to the same standard we'd want for our own daughters.
-
Yes. Some girls use them as backup while they're building confidence, especially at school.
Others go solo from day one. There's no wrong way to start.
SUPER
●●●●● 30-60ml
The lining is thicker and extends to the back waist seam, so it covers you for overnights.
HEAVY
●●●●○ 25-40ml
Choose Heavy absorbency if you have a heavy flow or for your heavy flow days or for moderate incontinence. The lining extends to the back waist seams, so it covers you for overnights or when laying down on your side and back.
MODERATE/HEAVY
●●●○○ 20-30ml
Perfect to use if your flow is moderate, so think 3rd or 4th day of your period. Also for light to moderate incontinence leaks. These undies will also cover you at night as the leakproof lining extends up to the back waist seam (a thinner layer than the heavy absorbency).
MODERATE
●●○○○ 15-20ml
Choose Moderate absorbency for day-time wear, active wear and for when you just don't need that extra panel of protection up the back. Suitable for flows from 15-25 ml. The lining is generally a little thinner too, so does not feel bulky.
LIGHT
●○○○○ 10-15ml
If your flow is light, or you are using as a backup, choose light absorbency. This will provide a leakproof function and some absorbency as a backup.