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Get accurate measurements, we recommend you re-check your size with every purchase..

For most of our styles, the most important measurement is your hip size to get the right fit. It is also useful to check your waist measurement for certain styles. Please take a look at the product description for a guide.

If you're in between sizes, we suggest sizing up (e.g. from a size 10 to 12) for ultimate comfort.

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1. Place Your Feet Together

Having your feet apart can give a measurement that is actually larger than your hip area.

2. Waist

Your natural waist measurement should be taken at the narrowest part of your torso. This is where your body curves in and is often at or above your belly button.

3. Hip

Your hip measurements should be taken at the fullest part of your hips.

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We want you to feel confident ordering Pee Chee Cheex. Below you’ll find how our refunds, exchanges and guarantees work, depending on the reason your item is coming back.

100 Day Risk Free Guarantee (on any multipack)

Our 100 Day Risk Free Guarantee is here to help first-time customers try Pee Chee Cheex with confidence, and experience how our period undies perform, risk free.

This guarantee is about product performance, not fit or sizing. It’s designed so new customers can trial our leak protection with confidence.

How the 100 Day Risk Free Guarantee works

If this is your first order with Pee Chee Cheex, you’re covered under our 100 Day Risk Free Guarantee for one (1) pair only from a multipack.

When your order arrives, we recommend:

  • Washing and wearing just one pair first to trial performance during your period
  • Keeping the remaining pairs unopened, unworn, unwashed, and sealed (each pair is individually packed and sealed for hygiene reasons)

If the worn pair does not perform as intended, you can contact us within 100 days of receiving your order and we’ll help you out.

And just so you know — you don’t need to send back the worn pair.

Let us break it down for you

If you purchase a multipack and want to try Pee Chee Cheex for the first time, simply wear one pair to see how they perform.

If that pair doesn’t work for you, reach out to us within 100 days. Any remaining pairs must be unopened and sealed to be eligible for a refund or store credit.

Wearing more than one pair before contacting us may mean the order isn’t eligible under this guarantee.

A quick heads-up

This guarantee is designed to help first-time customers trial product performance only.  
Size or fit issues, size exchanges, change-of-mind returns, and orders placed by returning customers are handled separately — please see the sections below.

Size Exchanges

We want you to feel confident choosing your size. Our undies are made true to size, so we strongly recommend using our size guide before ordering.

If you need a size exchange, the following conditions apply:

  • Size exchanges must be requested within 30 days of receiving your order  
  • Each order includes one (1) complimentary size exchange
  • Items must be unopened, unwashed, unworn, and unused
  • Each pair must remain sealed in its original packaging for hygiene reasons  
  • Exchanges are available for the same style and colour only, subject to stock availability   

If you request additional size exchanges beyond the first, an exchange fee may apply to cover handling and shipping costs. We’ll always let you know any applicable fee before processing.

Important:  
Size exchanges are not covered under our 100 Day Risk Free Guarantee.

If the requested replacement size is unavailable, we’ll be in touch to discuss available options.

 

Change of Mind

If you change your mind, you can request a return within 30 days of receiving your order, provided the following conditions are met:

  • Proof of purchase is provided
  • Clear photographs (front and back) of the product packaging are supplied to help us assess the return
  • The product is unopened, unwashed, unworn, and unused
  • Each pair remains sealed in its original packaging for hygiene reasons
  • The packaging has not been opened, tampered with, damaged, or altered in any way

We don’t accept change-of-mind returns on Sale, Clearance, Factory Seconds, or Final Sale items, including products in our We Made Heaps category.

For eligible change-of-mind returns, we’ll let you know whether a refund, store credit, or exchange is available, depending on the circumstances. (This does not affect your rights in relation to faulty or incorrectly described products)

 

Faulty Product

We work extremely hard to ensure all Pee Chee Cheex products are made to a high standard. If something isn’t right, please reach out — we’re here to help.

If a product is faulty or not as described, you may be entitled to a remedy under Australian Consumer Law.

Depending on the nature of the issue, we may offer a repair, replacement, refund, or store credit, in line with your rights.

Products marked as factory seconds at the time of purchase are excluded from this section, as any known faults are disclosed upfront.

 

Cost of Returns

Who covers return shipping depends on why the item is coming back — here’s how it works.

  • 100 Day Risk Free Guarantee: If your return is approved under our 100 Day Risk Free Guarantee, we’ll take care of the return shipping. Just reach out to us first so we can help organise it.
  • Faulty or incorrectly described products: If something arrives faulty or not as described, we’ve got you. Return shipping will be covered in line with your rights under Australian Consumer Law.
  • Size exchanges and change-of-mind returns: For size exchanges or change-of-mind returns, return shipping costs are generally covered by the customer, unless we let you know otherwise.

To help make sure your return gets back to us safely, please follow the return instructions we provide. If items are sent back without getting in touch first or without using the suggested return process, we can’t be responsible for parcels that go missing along the way.

 

How To Complete Refunds & Exchanges

To get started, please email us at wecare [@] au.peecheecheex [dot] com before sending anything back. We’ll send you the required form to complete.

Don’t have a printer? No worries, just download the form, type your details into the fields provided, save it, and email it back to us.

Once we receive your email, our team will be in touch to confirm the next steps.

 

How To Pack and Send Returns

We recommend using the reusable satchel or mailer bag your order arrived in — it’s compostable and biodegradable.

Please don’t write on, label, tape, or attach anything directly to the Product(s) packaging.

If you’re arranging your own return postage, we recommend using a tracked service and keeping your tracking number until your return has been processed. This helps ensure your parcel gets back to us safely, as we’re unable to take responsibility for returns that are lost or go missing in transit.

 

How Long Will A Refund Take To Process?

Please allow time for your return delivery to reach us. This may very depending on your location. Refunds requests are reviewed within 48-72 hours of receiving your item. We will notify you once we’ve received and inspected your return, and let you know the status of your refund request. Depending on your payment method, please allow 2 to 4 weeks for refunds to be processed.


 

Please read more about Returning products to us in our Terms of Sale here.

The Experience

Enjoy the luxury of owning exclusive Curated Factory Selections—where comfort meets protection and smart patented design. Each piece is made to give you a life-changing experience by keeping you comfortable and protected from leaks. Absorbing up to 12 tampons of fluid so you can focus on what matters every day.

The Difference

Every piece is handcrafted with care, featuring tiny variations that are hard to notice. But the real difference is clear—each piece is wrapped in double layers of Lenzing modal fabric, offering a silky softness, natural moisture control, and breathability. This is premium quality you can feel.

The Craft

Experience period care that matches your high standards. Created for those who want the best, The Period Undie is built for your busy days. We spent 19,000 hours refining 57 designs with 49 premium fabrics, focusing on comfort, performance, and durability. Every detail is designed to prevent leaks and discomfort, ensuring you stay fresh and dry. We understand time is valuable—our period care is designed to keep you focused on what matters most to you.

The Value

Due to high demand, our Curated Factory Selections are limited. Get up to 34% off and up to $130 off multipacks, plus free shipping across Australia. We’re so sure you’ll love these period undies that we offer a 60-day risk-free guarantee on all multipacks. Try a pair and see the difference. This is designed for those who want the best in period care—a choice that reflects your high standards and taste.

Don’t miss this chance to make a change. Act now—this exclusive offer won’t last.

(*Limited to one multipack per person.)

We know this might feel risky

We get it. Trying something new, especially when it comes to period care. But with [pee chee cheex], you have nothing to worry about.

Here’s why:

With our 100 day Risk-Free Guarantee for all multipacks, you can try [pee chee cheex] with no dramas. No pressure. Try just one pair from a multipack, and if you don’t love it, return the unopened undies for a full refund.

See? No pressure at all.

And guess what? We’re adding FREE Shipping and Returns on any multipack too!

So, with nothing to lose, let’s take a look at why [pee chee cheex] multipacks are the smart choice.

Stop Throwing Away Money on Disposables—Choose the Smarter Option

Most of us spend $15 to $20 on disposables, every month—that’s over $200 a year, literally tossed away on single-use products. And that doesn’t even include the cost of replacing stained underwear and towels from leaks.

A [pee chee cheex] multipack is just under $150. So naturally, switching to a multipack pays for itself over and over again.

Not wasting feels good. But being ready for anything your vagina throws at you… that’s the game-changer.

So…

One Pair Will NOT Do It

Sure, one pair might get you started, but it’s not enough for your whole period. Imagine running out mid-cycle—scrambling back to disposables? No thanks!

That’s why a multipack gives you freedom and confidence for your entire cycle—whether it’s a light day or a heavy one. Never worry about running out or having to go backwards and resort to disposables – again!

You Can’t Get Simpler

Think about it: with a multipack, you’ll always have a fresh pair ready. No more last-minute panics, no more waiting for that one pair to dry. Just grab, wear, and go.

It’s like slipping into your comfiest undies, but with built-in period protection.

When it’s this easy, can you really imagine going back?

You Don’t Need to Make Trade-offs

Let’s be real: you don’t need to juggle tampons AND pads just to feel safe. [pee chee cheex] multipacks gives you full, comfortable, leak-proof protection. No more juggling multiple items. No more panty liners. Get peace of mind that comes with reliable protection, in one product.

Here’s where it gets even better: by choosing Pee Chee Cheex,

You’re Embracing a Natural Solution

…that doesn’t stick around for centuries like disposables do. When you Switch & Save with multipacks, you’re not just saving money—you’re saving the planet. Each pair is 85% compostable and biodegradable, ensuring that when they’re done, they return to the earth instead of polluting it for generations.

Every small step adds up. Start today - choose one multipack here and join [pee chee cheex] community - making a real difference, one period at a time.

trees to undees

You might want to think twice before using pads, tampons and antibacterial-treated products.

Amazing Secret Fabric Discovered By Sniff Tester Absorbs Your Heavy Flow, Combats Odour, Eliminates Antibacterial Coating… And Can Help You Feel Clean And Fresh All Day

Warning: this may leave some people feeling deeply disgusted. Just to prove it works we did it anyway and we cracked the code to odour control WITHOUT intentionally adding chemicals.

they say...

"I don't know what they put in these pads, but they make me smell worse."
"I had to change the pad every 2 hours because of the smell."
"I feel self-conscious around my partner because of the odour."

Let's face it: nobody wants funky smells. But most of us don't want to smell like a walking chemistry lab either. Especially not down there, where things are sensitive.

fun fact:

Did you know that the skin in your private parts can absorb toxins and chemicals faster than other areas of your body?

Chemicals in period care products, such as fragrance and bonding adhesives, pose a non-zero risk of skin absorption and harmful side-effects. Even odour-proofing antibacterial treatments eventually fade with washing, leaving us with limited odour control and potential health risks. No thanks!

Now imagine all those washed away chemicals leeching into our oceans. It's a fair dinkum dealbreaker.

enter bamboo

... with its natural antibacterial properties, moisture-wicking abilities, and sensitivity to skin. Plus, it's eco-friendly and biodegradable, unlike disposable pads and tampons that take hundreds of years to break down in landfills.

While some studies have found antibacterial inactivity in natural bamboo fiber, they didn't test the fabric with menstrual blood. So we were wondering: "Okay, but does it actually work?"

it actually works

We did our own subjective, non-scientific "sniff test" with real dried menstrual blood to confirm findings – and trust us, they really work! Our gussets made from bamboo/cotton without added antibacterial treatments had significantly less funky odours than those made from polyester with added chemicals.

We even stress-tested our absorbent core, with heavy bleeders, and found that our bamboo fabric design not only absorbed more flow but also had significantly better odour control.

Combining bamboo with our quick-wicking Lenzing Modal first layer, which also has antibacterial properties, creates a cracking combo that keeps you feeling clean and fresh during that time of the month.

That's why we choose our uniquely sourced and custom made specification of bamboo fabric combined with Lenzing Modal. Each fabric is much more effective because of how they work together. They wick-away, absorb more and care for our skin, our health and our loved ones.

We're all about keeping it real down under.

PS: We performed the "sniff test" on many different users to ensure the accuracy of our claims. However, everyone's experience is unique, and we didn't test all types of women with different health situations.


PSS: if smells persist, we recommend you go get it checked out by a doctor.

what makes [pee chee cheex] the world's best period undies

protection made comfortable

backed by our 100% risk-free guarantees

  • backed by our 100% risk-free guarantees

    Switch & Save Multipacks

SHOP SWITCH & SAVE MULTIPACKS
Customers rate us 4.7/5 based on 92 reviews.

Let customers speak for us

from 92 reviews
Amazing! Life changer!

I absolutely love these. I have actually said to my partner that for the first time in my life I am looking forward to my period. They have become my go-to underwear for every occasion, regardless whether that time of the month has arrived or not....walking the dog, working in the office, lazing around.

Sumera L.
Merindah Hi-Waist Regular Heavy
Just right for me and my tween

I bought these to test if they are a good option for my tween who has not yet started her cycle. They are great! Snug yet comfortable fit, I feel dry and fresh even through yoga and high intensity workouts.

Silvia C.
Merindah Hi-Waist Super Heavy
Feels Amazing!

This product feels so safe, clean and secure, I am convinced!

Kristy S.
Merindah Hi-Waist Regular Heavy
Comfy and absorbent.

Comfortable, absorbent, perfect fit. It's definitely worth giving them a try. I'm ordering more!

Natalie K.
Merindah Hi-Waist Super Heavy
Surprisingly Amazing

I was a bit skeptical at first but after reading positive reviews I thought I'd give it a try. Holds your period well and keeps you feeling dry all day. It was also very easy to wash and I love the natural material it's made from because it's quite soft!

Claire W.
Merindah Hi-Waist Regular Heavy
Actually works!

Perfect fit, comfortable, and I am amazed how dry I felt all day.

Christine F.
Bunji Bikini Regular Heavy
Life saver at work

Bought these as I work in early childcare, so lots of picking up kids, jumping around, dancing and laughing which all can trigger a small leak. Was tentative about these, so decided to buy a pack and test out one pair on their risk-free guarantee. Well, after one day at work with no embarrassing moments, I decided to keep the rest.

Sara P.
Bunji Bikini Super Heavy
Unbelievable undies

These new undies have exceeded all my expectations in terms of comfort and effectiveness. I wish I had them in high school.

Valery D.
Bunji Bikini Regular Heavy