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

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

Size (by age - not clothing size): Age 8-10
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 $70*

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 $70


Straightforward delivery, no surprises at checkout.

Promotion banner

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.

Leakproof period underwear designed for tweens ages 8-14. Customers praised the age-appropriate, youthful designs that are "beautifully designed" and "not bulky." Parents reported daughters feel comfortable wearing them with "no leaks." All reviews were 5-star ratings highlighting comfort and effective leak protection.

  • 5 stars: 72 (96%)
  • 4 stars: 3 (4%)
  • 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

A
Anonymous

This book is a great way to start the conversation about puberty and what to expect.

S
Susan R.

This pack is great for my tween and a lovely customer service.

J
Jasmine S.

My daughter loves them. She feels comfortable leaving the house in them with no leaks.

V
Viktoria G.

Really impressed with this period pack! It's discreet, convenient, and contains everything needed for emergencies. Perfect for school/sport bags and helps girls feel prepared and confident throughout the day.

D
Deana

Loved it. Excellent idea and very discreet for my 10 year old. Lives in her school bag. She was so excited to have this and it’s surprising how much this helps her feel at ease with transitioning through a difficult time.

B
Bianca C.

I purchased a kit for my daughter in preparation. She has gone from nervous to educated & excited. The kit is brilliant and filled with all the necessities.

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.

R
Robin A.

Brilliant product! So compact and includes everything a young girl would need if experiencing her first period. I love the way a young girl can be prepared and saves any embarrassment if accidents occur. Gives mum peace of mind too!

M
Marni R.

My daughter has the Fanzy Pantz kit in her locker at school with the wipes and period knickers, ready for the day she get her period, in case it’s at school. This gives her confidence and comfort if it should unfold that way. The undies feel very nice and soft - will stock up on her correct sizewhen she reaches that stage in her life. The kits are so perfect for Mums looking out for their daughters, so when the time comes she feels in control, not embarrassed or overwhelmed. So good.

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.

A
Amanda W.

Fantastic products!! My daughter LOVES the kit, & knowing everything she needs is all together in 1 pack.
Definitely recommending this product to every mother of girls I know!!

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.