Scarlet Period rae Heat Pad: Portable, USB-powered warmth for period pain.

Scarlet Period’s rae Heat Pad offers warmth for over 4 hours.

Scarlet Period rae Heat Pad: 50°C heat, 3 soothing, comfy settings.

Scarlet Period Pocket Underwear includes a discreet pocket to hold rae.

Scarlet Period Pocket Underwear keeps the rae heat device away from your skin to protect your skin for ongoing use, and it makes it move with you wherever your day takes you.

rae named Best in Class: Consumer Electronic Product of the Year 2025

Period Power Pair

Name: Period Power Pair
Brand: Scarlet
Price: 145.0 AUD
Availability: InStock

Everything you need to heat on the go

$145.00 AUD ~~$159.00 AUD~~

Cosy up with the rae Heat Pad, tucked into our Period Pocket Underwear. Because comfort should always come first, buy the set and save $14.

Buy a Bundle & Save
Comfy & Body-safe
Duo for a better period
1% for the Planet

Scarlet Period High-Waisted Pocket Brief (Size)Size Chart

6 (XS)

8 (S)

10 (M)

12 (L)

14 (XL)

16 (XXL)

18 (XXXL)

Scarlet Period High-Waisted Pocket Brief (Style)

Light-Moderate

Moderate-Heavy

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Stores all your goodies, like Cups, wet swimmers, and snacks. +$7 (save $3)

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Makes cleaning both your Period Cup and the rae Heat Pad a breeze. +$5 (save $3)

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Keep your undies safe with a Scarlet Period Laundry Bag +$7 (save $3)

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Add rae Period Pocket Underwear +$14

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Keep your Cup clean and fresh with our gentle wash +$5 (save $5)

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Keep your Cup clean and fresh with our gentle wash

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Why You’ll Love It

Say hello to your new period power duo: cosy, discreet relief with the rae Heat Pad + Period Pocket Undies, wherever your day takes you.

✨rae Heat Pad: Soothing heat for ultimate period self-care and comfort. USB-rechargeable, ultra-slim, and heats up fast with 3 settings.

✨ Period Pocket Undies: Available in Light–Moderate or Moderate–Heavy, and are made from breathable, organic cotton.

Easy Care, Zero Fuss

✨ rae Heat Pad: Select your heat setting: low (5+ hrs), medium (3 hrs), or high (2+ hrs). Best used with Period Pocket Undies or over underwear. For direct skin use, stick to lower settings and short intervals.

✨ Period Pocket Undies: Rinse in cold water until clear, machine wash cold with mild detergent. Avoid bleach and fabric softener. Line dry or tumble dry on low.

Materials & Composition

✨ rae Heat Pad: Made from super-soft, scent-free silicone with three customizable heat settings.

✨ Period Pocket Undies: Soft organic cotton (PFAS-free) with fast-absorbing 4-layer technology for dryness.

Size & Fit

✨ Fit Note: Our underwear runs on the slightly smaller side - if you're between sizes, size up.

✨ Teen-to-Adult Fit: Our sizing is unique. Please refer to both the numerical (e.g., 10, 12) and letter sizing (e.g., M, L) in our guide.

✨ Australian Sizing: We use AU sizes - international customers, check our Size Guide.

✨ Still Unsure? Contact us for advice. We love a chat!

Planet-Friendly Practices

By choosing Scarlet, you're making a sustainable choice for your self-care routine and the planet. Our products are designed to reduce waste, promote reuse, and incorporate the cleanest ingredients and eco-friendly packaging.

✅ Reusable Options: From our underwear to our rae Heat Pad, we provide better sustainable, reusable period self-care options.

✅ Eco-Conscious Ingredients: We find the best ingredients/product components free from harmful chemicals.

✅ No Harmful Chemicals: Because you deserve better.

✅ Recyclable Packaging: Designed to minimise waste.

Scarlet is proud to be a 1% for the Planet member, joining a global movement dedicated to environmental stewardship.

IN THE MEDIA

Scarlet Period rae Heat Pad: Wireless relief, soft silicone, smart period care.

Have you met rae - the heat pad that goes with your flow?

To be safe, let’s do some formal introductions…

rae is wireless and rechargeable, with a sleek, comfy design. Designed with three heat settings that go up to 50°C, it lasts up to 5 hours, and is totally wireless.

Curved for your comfort
Three heat settings, up to 50 degrees
Soft high-quality silicone
Wear with your Period Pocket Underwear

BUY NOW

★★★★★

“Say goodbye to clunky hot water bottles and hello to rae, Scarlet’s game-changing, wearable, wireless heat device.”
- Sitchu

★★★★★

“rae gave the perfect amount of heat… Being able to change settings was a game changer because it felt safer and more comfortable.”
News

★★★★★

"A wearable, wireless heat device that’s far more practical than clutching a hot water bottle is pure genius."
Body & Soul

Your Questions, Answered

Umm, what is rae?

rae is THE heat pad that’s here to go with your flow. Designed in Australia, rae is slim, soft, and curved for extra comfort. With three heat settings and flexible wings that hug your body, it’s USB-rechargeable, splash-proof, and fits right into our custom period undies pouch.

How hot does rae get?

It has a built-in thermometer, so it maintains the heat level depending on the heat setting you are using (up to 50 degrees). We suggest always starting on a low setting until you get used to it and find the right heat for you.

Won’t rae just fall out of my pants?

Nope, because we’ve come up with a genius solution. Meet our Period Pocket Underwear: a customised version of our best-selling period underwear with a little pouch for the device, perfect for when you’re on the move.

Attached to your regular undies? No problem! Wear rae between your underwear and clothing. If using it directly on the skin, stick to a lower heat setting.

Can I use rae without the undies?

rae is designed to get hot, so we do recommend using rae with them or otherwise over your undies. If using directly on the skin, start at the lowest setting and monitor your comfort.

Can I use the undies without rae?

We’re not here for rules, so you do you boo! They do have additional fabric for the pocket at the front so if not using with rae, you might prefer our Bikini Brief or High-Waisted Brief.

What does the absorbency level mean?

Super Light: Holds up to 1 teaspoon, which is equal to less than one regular tampon. Think of it as a new-age panty liner, so it’s great for spotting, light leaks and discharge. Try: Invisible Thong

Light: Holds up to 3 teaspoons, which is equal to 2 regular tampons or one pad. This is for light days to save you from pesky drips, discharge, and lighter flows. Try: G-String or Bikini Brief in Light-Moderate

Moderate: Holds up to 5 teaspoons, which is equal to 3 regular tampons or 2 pads. Go for this on moderate days or as extra defence on heavy days with our Period Cup. Try: High-Waisted Brief or Bikini Brief in Moderate-Heavy

Heavy: Holds up to 7 teaspoons, which is equal to 4 regular tampons or 3 pads. Our heavy hitters are great to wear on their own, day or night. Try: Boyshort or Period Cup

The Secret to Better Periods

Scarlet Period Bikini Brief - Available in Light & Moderate

Period Undies

Built-in period tech wicks away moisture to keep you dry and comfy.

Period Cups

The ultimate guide to folding, inserting, and removing your Period Cup.

Learn More

Scarlet Period High-Waisted Swim Bikini Brief | Light Absorbency, flattering high waist

Period Swim

Period Swim stops your flow from going out and water getting in. genius, huh!

Period Heat

Meet rae, the self-care device created heat on the go and go with your flow.

Learn More

Great little hottie just needs..

Love my scarlet Rae as an endo and fibro warrior for 20 years it’s nice to find new products helping life with chronic pain better. If I could have one thing it would be an elasticated belt that it could slip into (like a running belt) so I can use it around the house or out and about. As I suffer from chronic nerve pain having the ability to wear it around my hip or lower back would really give it a 5* review. I did take it to a restaurant the other day and place it discretely on my chair. amazing

So much better than a heat pack

I used this for the first time this week, and honestly what a game changer. I got the underwear too and it was super comfy and a glorious amount of heat constantly delivered.

Rae Heat pad

I finally invested in a more sustainable form of heat therapy for my endo pain- the consistent heat is really great , including a band to hold in place for ease of wear under clothes would be really useful.

The pocket undies are genius

The combo just works. Secure, comfy and the heat stays exactly where you want it.

Portable relief that works

I genuinely didnt expect to love this as much as I do. I use it at work, in the car, even walking the dog. No cords, no leaking heat pack, no drama. Just instant warmth exactly where I need it.

1 2 3

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Period Power Pair

Have you met rae - the heat pad that goes with your flow?

Your Questions, Answered

The Secret to Better Periods

Period Undies

Period Cups

Period Swim

Period Heat

Customer Reviews