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.
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.
| AU/UK/NZ |
| US |
| EU |
| HIPS (CM) |
| WAIST (CM) |
| HIPS (In) |
| WAIST (IN) |
| 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 |
| 3XS | 2XS | XS | S | M | L | XL | 2XL | 3XL | 4XL | 5XL | 6XL |
| 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
| 78.5-81 | 83.5-86 | 88.5-91 | 93.5-96 | 98.5-101 | 103.5-106 | 108.5-111 | 113.5-116 | 119-124 | 127-132 | 135-140 | 143-148 |
| 58 | 61 | 66 | 71 | 76 | 81 | 86 | 91 | 99 | 107 | 115 | 123 |
| 31-32 | 33-34 | 35-36 | 37-38 | 39-40 | 41-42 | 43-44 | 45-46 | 47-49 | 50-52 | 53-55 | 56-58 |
| 23 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 39 | 42 | 45 | 48 |
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.
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.
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:
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.
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.
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.
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:
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.
If you change your mind, you can request a return within 30 days of receiving your order, provided the following conditions are met:
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)
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.
Who covers return shipping depends on why the item is coming back — here’s how it works.
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.
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.
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.
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.
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.
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…
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!
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?
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,
…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.
If backup is your default, this is for you.
When one product hasn’t earned trust, backup becomes the plan — loo checks, overlap pads, “just in case” layers.
✅ 12 tampons worth.
✅ Two hours of leak testing.
✅ Squished into 20 seconds.
Bridget introduces the real heavy-flow test... no edits, just footage.
Oh, it’s real.
If anything leaked, you'd see it—loud and proud—on the towel.
But nope. Dry as a bone.
See… 👇
One pair of our Super Heavies can hold up to 80% of what the average person loses in a full cycle.
Not that we’re suggesting you wear them for three days straight like a rogue backpacker in Bali. (Please don’t.)
The American College of OBGYN gives period undies the thumbs-up for up to 12 hours of wear.
Ours? They’re crafted to go beyond the average—more absorbent, more comfortable, and a whole lot more dependable.
The point? We got you.
If you’re deep asleep, sweating through a workout, or juggling a back-to-back day at work—you don’t need to stop everything to check for leaks.
Real women bled in them. Gymmed in them. Slept in them. 👇
✅ No leaks.
✅ No stains.
✅ No panic-wakeups at 2am.
Real lives changed.
No magic. Just smart air channels.
Our world-first design uses patented air channels designed to direct fluid away from your body and lock it deep inside the gusset.
That means you stay dry. Stay comfy. Stay in control.
🤔 Here's the thing—everyone’s a little sceptical at first.
Trying a new period product, especially for that time of the month, is a big deal. You don’t know what to expect. We get it.
That’s why the first step is just building your confidence. Try them at home first (because, you know… new things + periods = cautious optimism😉). But once you do, you’ll see—they’re amazeballs.
Life gets much easier, comfier, and way less messy with these life-changing features below (not found in any other undie):
✔ 360° Leakproof Quad Barriers:
Our patented designs direct air and fluids to stop leaks everywhere—even at the sneaky side thigh-gap, where others fail. (Feel safe and secure to move, work, and sleep freely—because now, spare undies are for feeling fresh, not for emergencies)
✔ Absorbs Up to 12 Tampons worth:
Holds more flow, so you stay fresh and dry all day/night—no mess, no worries. (Sleep soundly through the whole night—no waking up in a panic to check the sheets or change your pad)
✔ Ultimate Comfort & Fit:
Luxurious, silky-smooth fabric crafted with two breathable, moisture-wicking layers that fully wrap around to keep you cool and dry. (So comfortable, you’ll almost forget you have your period—if it weren’t for the cramps and mood swings)
✔ Odour Controlled Naturally:
Bamboo + Cotton absorb fluids and patented Air Channels to keep things fresh—no added chemicals that wash away, leaving weird synthetics that start to smell a little… uh, strange over time. (Even in humid climates, you’ll stay fresh—no problems at all)
✔ Biodegradable & Compostable:
Crafted with Lenzing Modal fibers that come from nature and return to nature, making them so much better than single-use disposables. (Embrace a healthier, more sustainable future—because having a waste-free period feels great)
Don’t Settle For Anything Less
So You Can Live Freely
Read This Before Making Your Purchase
With No-Added Chemicals
Don’t Settle For Anything Less
So You Can Live Freely
Read This Before Making Your Purchase
With No-Added Chemicals
