Orgaknix Super Bikini (5 Pack) - Underwear

Organic cotton Super Bikini Period underwear

Organic Cotton Super Bikini Period Undies - 5 Pack (Orgaknix)

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Organic Cotton Super Bikini Period Undies - 5 Pack (Orgaknix)

$110.00~~$155.00~~

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ECO-CONSCIOUS PRODUCTION

Organic Cotton Super Bikini Period Undies - 5 Pack (Orgaknix)

Comfort meets confidence with our best-selling Super Bikini now in a convenient 5-pack bundle.

Includes 5 x Orgaknix Super Bikini Period Underwear
3 in classic black – stylish, soft, and super absorbent
2 in beige (depending on availability)
Note: Sizes 6–8 ladies and child sizes are only available in black.
60ml absorbency – ideal for heavy flow days, endo, postpartum & overnight protection

Why You’ll Love It:

These are the go-to choice for our community during heavy flow days. They offer leak-proof confidence while feeling like regular undies. With a regular-cut leg, good bum coverage and a mid-rise, comfort-top fabric waistband, they suit most body shapes beautifully and feel secure and breathable all day — and handle overnight flows like a dream.

Perfect For:

Heavy periods
Postpartum recovery
Endometriosis or clotting
Overnight wear

Bundle Savings:

RRP $145 – Now $130

Save over 10% when you bundle up!

Fabric & Care:

Made with our signature four-layer absorbent technology and organic cotton. Simply rinse, cold wash in a garment bag, and line dry. They’re designed to last at least 1–2 years of regular use.

Bonus Tip:

Bundle and rotate these in your cycle wardrobe to save washing and always have a fresh pair on hand.

Eco-friendly. Reusable. Leakproof. Always ready.

Full Rotation 10 Pack | Orgaknix Period Underwear - Underwear

Size Guide

Every body is different. Here's everything you need to find the right size and fit for you.

Super Bikini Brief High Waist Racerback Swimwear Swim Shorts

Step one

How to measure

Two quick ways to find your size before you look at the charts.

Measure your high hip

Wrap a soft tape measure around your hip bones — the area where our low-rise styles sit. This is usually higher than your fullest hip measurement.

Half waist flat lay

Lay your underwear or swim bottoms flat and measure across the top of the waistband, unstretched. This is the most accurate way to match sizing to a garment you already own.

Fit tip For the best fit, use both measurements. If you are between sizes or prefer a more relaxed fit, we recommend sizing up.

Step two

How each style fits

Same size, different feel. Here's what to expect from each cut.

Super Bikini

Low rise

Low rise fit Stretch side panels Soft and forgiving Light to medium coverage

FirmerSofter

Most forgiving fit

Brief

Mid rise

Mid rise fit More coverage at back Full stretch waistband More structured feel

FirmerSofter

More structured feel

Swimwear

Bikinis and one pieces

Firm, supportive fit Made from swim fabric Secure in the water Feels firmer than underwear

FirmerSofter

Firm, secure fit

Swim Shorts

Board short style

Relaxed, easy fit More coverage Made from swim fabric Designed for comfort

FirmerSofter

Relaxed, comfortable fit

High Waist

High rise

High rise fit Maximum coverage Smooth, supportive waistband Most structured feel

FirmerSofter

Maximum coverage and support

Racerback

One piece swimsuit

Chlorine-resistant fabric Firm, secure fit Designed for serious swimmers Stays secure in water

FirmerSofter

Firmest fit — built for laps

🏊 Swimwear fabric is designed to hold its shape in the water, so it will feel firmer than everyday underwear. If you prefer a more relaxed swim fit, size up.

Step three

Find your size

Select your range below and match your measurement to the chart.

📏

Quick note on fit before you look at the charts

Between sizes? Go snug for true to size or size up for a more relaxed fit. There's no wrong answer. Most customers find that sizing up feels more comfortable for everyday wear.

Teen sizing is based on body measurements, not age. Find the high hip measurement that matches and that's your size.

Girls Size	High Hip (cm)
8–10	60–66 cm
10–12	66–72 cm
12–14	72–78 cm
14–16	78–86 cm
16–18	86–94 cm

If your child is between sizes or prefers a more relaxed fit, sizing up is often more comfortable.

Measure around your high hip — the area over your hip bones where our low-rise styles sit. Sizing is based on this measurement, not the fullest part of the hip.

AU Size	High Hip (cm)	Half Waist Flat Lay (cm) ①
6	75–80 cm	30 cm
8	80–86 cm	32 cm
10	86–92 cm	34 cm
12	92–98 cm	36 cm
14	98–104 cm	38 cm
16	104–110 cm	40 cm
18	110–116 cm	42 cm
20	116–122 cm	44 cm
22	122–130 cm	46 cm
24	130–138 cm	48 cm

① Half waist flat lay: Lay your underwear flat and measure straight across the waistband, unstretched. A size 12 measures 34 cm flat, which equals approximately 68 cm around your body.

Important: These measurements are based on the high hip (hip bones), not the fullest part of the hips. If you're curvier through the hips or prefer a more relaxed fit, we recommend sizing up.

Period swimwear is sized to fit snugly in the water. Measure your high hip and match it to the chart. If you prefer a more relaxed swim fit, size up.

AU Size	High Hip (cm)	Half Waist Flat Lay (cm)
6	75–80 cm	31 cm
8	80–85 cm	33 cm
10	85–90 cm	35 cm
12	90–95 cm	37 cm
14	95–100 cm	39 cm
16	100–105 cm	41 cm
18	105–110 cm	43 cm
20	110–115 cm	45 cm

Swimwear fits more firmly than underwear and is designed to stay secure in the water. These measurements are based on the high hip. If you are between sizes or prefer a more relaxed fit, we recommend sizing up.

🌿

Every body is different — and so is every style.

Things that can affect fit: rise (low, mid, high waist), fabric type (cotton vs swim), personal comfort preference (firm vs relaxed).

You want a snug fitStay true to size

You want a relaxed fitSize up one

Still not sure? We're here to help.

Chat with us or send an email and we'll help you find the right size. No question is too small.

Email us at info@ecoperiod.com.au

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100% AUSTRALIAN OWNED

We're a business run by women, for women, based in the beautiful Hinterlands of Queensland's Sunshine Coast.

DESIGNED TO LAST

We are dedicated to providing a high quality product. We back our product quality so highly, that we will replace any faulty underwear if it doesn't last for at least 6 months.

SUSTAINABLE AT OUR CORE

From fabric and garment production, to our day to day operation we are consistently working towards minimising our environmental footprint.

WE GIVE BACK

We're passionate about giving back to those in need. That's why we donate products and 5% of our profits to charities supporting women, homelessness and environmental causes.

WHO WE ARE

Eco Period offers beautifully crafted, quality period garments that are made to last, and are just as good for your body as they are for the environment.

We are passionate about making a difference through our products and hope to help you transition (or continue) your journey towards zero waste, eco and organic period solutions.

GET TO KNOW US

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Organic Cotton Super Bikini Period Undies - 5 Pack (Orgaknix)

Why You’ll Love It:

Perfect For:

Bundle Savings:

Fabric & Care:

Bonus Tip:

100% AUSTRALIAN OWNED

DESIGNED TO LAST

SUSTAINABLE AT OUR CORE

WE GIVE BACK