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 from us. 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 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 us, 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 our period undies 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 our 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.
for regular flow days.
Best for...
Designed for On-The-Move.
A low-rise fit that sits effortlessly on your hips, contouring gently to your shape without digging in.
Soft, smooth, and barely-there to wear, it’s designed for days when you don’t want to think about what you’ve got on, you just want it to work.
And underneath it all, patented leakproof protection quietly does its thing so you can get on with your day.
11 Reasons Women Love Pee Chee Cheex
1. Designed for complete confidence, where it matters
2. Extended coverage for longer wear
3. Naturally odour-neutralising
4. Feels like normal underwear
5. No bunching. No chafing.
6. A waistband that stays comfortable, all day
7. Absorbency that lasts longer
8. Breathable comfort
9. Moves with your body, effortlessly
10. Discreet by design
11. Crafted to keep its look and feel over time
The Fabric Sensation
The first thing you notice about beech forests is the cool, fresh air. That shaded stillness beneath the tall trees, leaves soft beneath each step. A quiet, effortless kind of freshness all around you. **Our modal fibres begin there**, sourced from sustainably managed beechwood forests in Northern and Central Europe.
Silky. Smooth. Cool to the touch. A barely-there feel that lets your body move easily, without friction or weight. Crafted from double-layer modal made with beechwood fibres, the fabric forms a naturally smooth surface, so your skin glides across it with light, breathable ease.
Everything working together in quiet, effortless balance. Double-layer modal, bamboo fibres, and Air Channels are designed to move air through the fabric, helping reduce moisture while natural fibres work to neutralise odour. A system working in balance, just as nature intended.
Breeze past your cycle like it didn’t happen.
Pee Chee Cheex by name. Peachy Cheeks by nature.
Materials
What touches your skin matters. So does what sits beneath it.
Each layer has a specific job: (1) to feel gentle, (2) absorb your flow or (3) provide leakproof protection.
Double-layer body and skin-facing gusset
🧵 95% LENZING™ Modal, 5% spandex
Made from naturally derived fibres, our double-layer LENZING™ Modal is highly breathable, helping heat and moisture move away for a cooler, drier and fresher feel.
Silky smooth and gentle against sensitive skin, it’s like a breath of fresh air down under.
Absorbent core
🧵 70% bamboo, 30% cotton
Our bamboo-cotton fabric absorbs and holds your flow.
The absorbent core reaches higher at the front and back for greater coverage.
Internal waterproof lining
🧵 100% polyester with polyurethane coating
The waterproof lining helps stop absorbed fluid from passing through.
Yet waterproofing is only part of the protection.
That’s why our patented design uses 360° leak barriers to surround and contain your flow, with built-in Air Channels forming part of those barriers.
Designed to work as one system, the absorbent core, waterproof lining and Air Channels reinforce protection around the inner-thigh areas where leaks tend to start -- without adding unnecessary bulk where the underwear meets your legs.
Made with at least 85% biodegradable materials.
(Excludes trims)
Calculated from the material composition by weight of the finished garment.
Ingredients
We don’t add antibacterial, anti-odour or moisture-management chemicals to make Pee Chee Cheex perform.
Instead, leak protection, moisture management and freshness come from carefully selected fibres, built-in Air Channels and the way the layers work together.
The performance is built into the underwear -- designed to keep doing its job, wash after wash, like a favourite pair should.
No adhesives or hot-melt glues between the fabric layers.
No latex is used in the fabric body, edges or elastics.
Our suppliers are required to meet OEKO-TEX® fabric requirements. But we don’t rely on fabric compliance alone.
We also independently test the completed underwear for specified PFAS, PFOA, PFCs, phthalates and volatile organic compounds.
None of the substances tested were detected above the laboratory reporting limits.
Why Pee Chee Cheex Work So Well?
Pee Chee Cheex are designed as a complete system. Every piece works together in balance. Just as nature intended.
At the core, a super absorbent layer draws fluid away from your skin and locks it away. Around it, our patented 360° quad-barrier protection is formed through the combination of physical leak barriers and built-in Air Channels woven between layers, so airflow moves naturally through the fabric — without relying on bonded adhesives. This helps reduce moisture and protect exactly where it matters.
Unlike traditional designs, our construction avoids the common stitching flaws found in many period undies, particularly around the gusset and leg seams. This is where leaks and discomfort often occur.
We don’t just claim performance — we show it.
Our absorbency and leakproof protection are demonstrated in real-time video testing, so you can 👉 see exactly how Pee Chee Cheex perform under pressure [click].
(Tested with real heavy-flow users and refined through 19,000+ hours of development.)
How Long Can I Wear Them Before I Change?
Every body and every flow is different. But many women, especially on heavier days, find they can rely on Pee Chee Cheex for far longer than other period underwear — without needing backup pads or tampons, so you can get on with your day without the constant checking.
Our highest absorbency styles hold up to 12 tampons’ worth of fluid — and we show it in real-time testing, so you can 👉 see exactly how they perform [click]. In fact, we stopped testing at that point because they were fully saturated — and still didn’t leak. For most women, that’s more than a typical day’s flow.
If you’re new to us, start by wearing them at home and notice how much longer you can go compared to your usual period product, then adjust from there.
The super absorbent core locks everything away, while the top layer draws moisture away from the surface. So you’re not dealing with that wet pad feeling sitting between your thighs.
How long you wear them comes down to your flow, and how fresh you want to feel. On lighter days, you may only need one pair. On heavier days, you might prefer to change more often. You’ve got the flexibility.
A simple rule? If you start to feel damp, it’s time to change into a fresh pair.
Our tip? Start with a 7-pack. It gives you enough pairs to rotate comfortably, without feeling like you’re constantly washing or caught short.
What Size Shall I Buy?
Before you buy, we recommend you always check our 👉 Size Chart here [click].
100 Day Risk-Free Guarantee
Try your first pair risk-free for 100 days with any multipack.
If your first pair doesn’t perform the way it should, simply return the unopened pairs in the multipack for a full refund. Even after trying your first pair.
So you can see how they feel for yourself.
Read more about our 👉 100 Day Risk-Free Guarantee here [click].
Free & Easy Returns
Ordered the wrong size? No worries. We give you free returns & exchanges on all unopened, unused products from our multipacks. Read more about our 👉 Returns Policy here [click].
Free Shipping
Free shipping Australia-wide for all multipacks. Packaging is reusable for refunds and exchanges. When you're done, the packaging is 100% biodegradable and compostable.
How Quick Will I Get My Exchanged Product?
We totally get that you're stoked to get your hands on your new Pee Chee Cheex undies and we want you to receive them ASAP too! Our team processes exchange orders within 1-2 business days after receiving your return (unopened, unworn, unwashed).
Packages are shipped via Australia Post, which usually takes 3 - 7 business days to arrive (includes packing and posting). We want you to be completely happy with your Pee Chee Cheex purchase, so if you need to make an exchange, we've got you covered with some easy steps 👉 here [click].
Conquer your day with [pee chee cheex] innovative features, leakproof quad barriers with extra thigh gap protection, a super absorbent core with natural odour control, natural fabrics gentle to the skin and dual layers of premium stretch fabric.
Our patented designs prevent leaks, even at the sides where others fail.
Holds more flow, keeping you fresh and dry all day / all night.
Two layers of Lenzing Modal fabric-body add softness and strength. They also hide stitching for a smooth look.
We design our products to actually work without adding chemical treatments for moisture management or odour control. Our designs exclude nasties like PFAS, PFOA, PFCs, Phthalates, and Volatile Organic Compounds. Additionally, our undies undergo thorough testing by a top global company to ensure quality.
We care deeply about this issue, so we set our own standards higher than the Oeko-tex Standard 100 requirements. Why? Because our undies are made from love, for loved ones.
Making the most uncomfortable time of the month comfortable. Our undies are soft and strong with two layers of Lenzing Modal fabric. The stitching is hidden for a smooth look.
And, not only is it comfortable and protective, it’s...
If you want a game changing new way to period you can kiss those single-use disposable panty liners, tampons, and pads goodbye.
Best part: they are 85% biodegradable and compostable (remaining 15% includes trimmings like elastics). Great for the planet.
So, Switch & Save some moolah and save the planet with multipacks for all-cycle protection without running out of undies or dealing with daily laundry.
Head over to our FAQS to get more answers.
![from [pee chee cheex] with love](http://www.peecheecheex.com/cdn/shop/collections/peecheecheex_with-love-mum-daughter_1322x600.jpg?v=1727918364)
