Tween Period Underwear | Leakproof Undies for Girls Ages 8-14

Regular price $25.00
  • Made to feel just like regular underwear for tweens & teens, with built-in protection for light to moderate days.

Tween size (approx. age): 10 - 12
Choose how many you need: 1 Pair

* Many families choose 2–3 pairs to make school weeks and washing easier.

Why you'll love it

Everyday comfort, sorted.

These tween period undies are designed for girls just starting out. Soft, breathable, and easy to wear under school uniforms and everyday clothes, they offer light to moderate protection without feeling bulky or “different”.

 

They’re made to help her get on with her day feeling comfortable and confident - and to give you peace of mind knowing she’s covered for school, sport, and those early, unpredictable cycles.

Best for
  • First and early periods
  • Light to moderate flow days
  • School, sport, and everyday activities
  • Tweens who want something comfortable and low-key
How the undies work
  • Built-in absorbent layers help lock in fluid while staying thin and breathable.
  • A waterproof layer adds leak protection without stiffness or noise.
  • No pads to stick, shift, or remember - just pull them on and go.

Fabric & care

Fabric

  • Outer: soft, breathable cotton blend
  • Gusset: absorbent and waterproof layers for built-in protection
  • Designed to feel comfortable against skin without bulk

Care

  • Rinse in cold water after wear
  • Machine wash cold
  • Do not use fabric softener or bleach
  • Line dry where possible, or tumble dry low
Good to know
  • Designed for several hours of wear on light to moderate days
  • Many families choose 2–3 pairs to feel prepared across the cycle
  • A waterproof pouch or laundry bag makes a great add-on for school bags
  • Check the size guide if you’re between sizes - comfort comes first
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Sizes for tweens & teens

From size 8 up to 6XL

Free shipping over $60*

Straightforward delivery, no surprises at checkout.

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60-Day money Back

Changed your mind? Unworn items can be returned within 60 days.

Aussie support, when you need it

Have a question? Our team is here to help.

Loved by hundreds of customers

What others are saying

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5.0
Kate, mum of a 10-year-old Verified Customer
“I wanted something simple that wouldn’t make periods feel like a big deal. These did exactly that. My daughter feels covered without feeling ‘different’, which matters so much.”
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5.0
Emma, mum of an 11-year-old Verified Customer
“We tried these before moving to heavier styles and they were perfect. Soft, not bulky, and she felt happy wearing them to school. Exactly what we needed.”
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5.0
Sarah, mum of a 9-year-old Verified Customer
“These were such a good starting point for my daughter. Comfortable, easy to wear under school clothes, and she didn’t feel self-conscious at all. It took a lot of stress out of those early days.”
How to Care for

Your Fanzy Pantz Period Underwear

Need Help?

Can’t find what you’re looking for or need personalised advice? Our team is here to help with sizing, absorbency, orders, or anything else you’re unsure about.

Contact Us

Are these suitable for first periods?

Yes. These undies are designed for first and early cycles, offering light to moderate protection that feels comfortable and easy to wear.

Can they be worn to school?

Absolutely. They’re designed to sit comfortably under school uniforms and everyday clothes without feeling bulky or noticeable.

How long can they be worn for?

They’re made for several hours of wear. Everyone’s flow is different, so it’s best to change when she feels ready or as part of her normal routine.

Do they feel bulky or padded?

No. The absorbent layers are built in and designed to feel just like regular underwear.

Do they replace pads or liners?


For light to moderate days, yes. Some people choose to use them as backup — it’s completely up to what feels right.

Free shipping over $60


Straightforward delivery, no surprises at checkout.

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60—Day money Back

Changed your mind? Unworn items can be returned within 30 days.

Local support, when you need it

Have a question? Our team is here to help.

Customers praised this leakproof period underwear for tweens, highlighting its "age appropriate design" and "cute" youthful patterns. Shoppers appreciated that it's "not bulky" while providing protection. All reviews gave 5-star ratings, with customers emphasizing the beautiful design that's suitable for the 8-14 age range.

  • Love the age appropriate design
  • Such cute design
  • Beautifully designed, youthful pattern and not bulky.
  • 5 stars: 62 (95%)
  • 4 stars: 3 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
b
bianca
Highly recommend!!

Thank you so much Fanzy Pants! You were a hit in our household, and I will be recommending to other familIes 💗💗💗

L
Louise P.
The best on the go wipes!

I absolutely love these & make sure I have some in my bag and car and also work locker.
You never know when you may need a freshen up, life saving for that time of the month.
I use them daily too after a run etc if I don’t have time between runs and lunch or what not. Highly recommend

E
Ella W.

As someone who hates having dirty/sweaty hands, these have been a life saver. Being able to carry these with me anywhere and not having to look for a bathroom/hand sanitiser has been so amazing! They make my hands feel super clean and dry nice and quickly as well!

K
Kara W.

So convenient when out and about, especially for my daughter.

K
Kara W.

So convenient for on the run, especially for my daughter.

K
Kara W.

Love the age appropriate design

N
Nicole H.

These are so useful.

E
Emma B.

great product, easy and efficient!

E
Emma B.

so good! always makes me feel fresh and clean!!

A
Alanna B.

Great addition to the first period pack

A
Alanna B.

Great addition

A
Alanna B.

Such cute design

D
Danni

Perfect for little clean ups and to feel fresh

D
Danni

I never would have thought of including these! Perfect for peace of mind

D
Danni

Beautifully designed, youthful pattern and not bulky.

C
Chloe

This kit is great! I love the underwear for my daughter. They look really cute and the book is cool too. She's had a bit of a look through it.

C
Christine M.

I was searching online for a kit for my daughter, and there were a few that had random bits and pieces but tbh, I just wanted a practical kit that she could keep in her school bag and take with her on camp that was already sorted. This one was perfect, I really like the heat patches. They are warm and feel really good.

J
Jessica A.

Amazing products, thank you for creating such a great kit. My daughter loves loves her kit and makes her feel confident about her period!

A
Anonymous

Such a great kit. It was perfect to pack in her school bag and have it ready for when the time comes.

S
Shae E.

These are such an easy essential to keep in your bag. As a mum, I’m constantly needing to clean hands on the go, and these just make it so much easier.
They’re convenient, don’t feel overly harsh or drying, and are perfect for quick clean ups when you’re out and about.
Definitely something I’ll keep stocked.

S
Shae E.

Okay these are one of those things you don’t realise you need… until you have them 😂
Perfect for quick freshen ups when you’re out all day (mums will get it).
Gentle, not overly scented, and actually feel nice to use ,not irritating at all.
I’ll definitely keep a few in my bag.

p
phoenix K.
My daughter actually liked getting her period???

I was dreading this milestone, but the First Period Kit made everything so much easier. The packaging is cute, the undies are comfy, and it had everything she needed without feeling awkward or scary. She actually smiled opening it (!!!). Said it made her feel “grown-up but in a good way.” Honestly, I wish I had this when I was her age.

C
Chloe
The glow-up I wish I had as a teen!

My daughter just got her first Fanzy First Period Kit and honestly, I wish this existed when I was her age. The undies are super cute, the packaging is actually fun (not scary or clinical), and everything inside made her feel prepared, not panicked. She said, “Mum, this actually makes periods cool.” I almost cried. Total confidence boost in a box.

R
Robin A.
The Perfect Period Package

Nothing can be more distressing for a girl during puberty than getting your period unexpectedly in the wrong place or wrong time. Having a Fanzy Pantz kit in your bag for emergency situations gives girls peace of mind and dignity.
Great for anyone going camping and holidaying. Light and compact and the colours and styles are lovely.

S
Seema
An empowering gift for every girl!

Absolutely love the Fanzy Pantz First Period Kit! Thoughtfully designed, beautifully packaged, and filled with essentials that truly support girls through their first period with comfort and confidence. As someone who grew up wishing for something like this, I can say it’s a game-changer. So grateful to see brands like Fanzy Pantz helping to normalise the conversation around periods and make that first step into womanhood feel proud, not awkward. Highly recommend! 🩷

H
Hollie
A must-have for every tween girl’s bag!

As a mum, I cannot recommend this kit enough. We packed it into my daughter's school and cheer bag as a “just in case” and it’s given both of us so much peace of mind. The leakproof undies are soft and comfy, the wipes and heat patch are discreet but super practical, and the packaging is actually tween-friendly (aka not embarrassing!).

Most of all—it’s empowering. My daughter feels more confident knowing she’s prepared, and that’s the whole point. FancyPants nailed it with this one 💖 Every girl deserves to start her period feeling supported, not stressed.

C
Carly
Love this kit so much

Honestly this kit has set my mind at ease, I live out of town and having it at home and my daughter knowing it’s here and ready whenever she needs is the best feeling. She isn’t scared of it and is confident that it will be just fine when the time comes and she needs it. She is more then happy to have a cute pink bag in her bag for school too. Absolutely amazing product. Thanks for making both our lives easier and giving her confidence. ❤️

K
Katie B.
The perfect addition to my gym bag!

I love these wipes, they go with me everywhere. They live in my gym bag for those unexpected moments (3 kids = many surprises). So refreshing!

C
Chloe
The wipes were a game-changer—for both of us.

I never really thought about the clean-up side of periods until we got this kit. The wipes are so handy—not just for my daughter, but honestly, I use them too now. They’re gentle, smell-free, and perfect for after sport or busy days. The heat patches? Life-changing. My daughter used to dread her period, but now she just pops one on under her uniform and keeps going. I love how compact everything is, and the little bag fits perfectly in her school backpack. It’s all so well thought out. Total win.

C
Chloe
The wipes were a game-changer—for both of us.

I never really thought about the clean-up side of periods until we got this kit. The wipes are so handy—not just for my daughter, but honestly, I use them too now. They’re gentle, smell-free, and perfect for after sport or busy days. The heat patches? Life-changing. My daughter used to dread her period, but now she just pops one on under her uniform and keeps going. I love how compact everything is, and the little bag fits perfectly in her school backpack. It’s all so well thought out. Total win.

W
Wendy
Way better than stuffing pads into a pencil case.

I was dreading the first period talk, but this kit made it so much easier. We unpacked it together, and it gave us a way to talk about everything without it feeling weird. The reusable undies are soft and easy to wash, and I love that it’s eco-friendly. Definitely one of the best first period kits I’ve seen.