Training undies your toddler won't want to take off.
Stage 3 is the bit between training pants and regular undies. Mostly dry, the odd accident still happens, your toddler's ready to feel like a big kid.
Built to be worn, not tolerated.
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Toilet Training Underwear
$24.95
$24.95
Save $0.00
🎋95% bambooSoft against little bodies
💧Light protectionFor small accidents
🫧Machine washableWash and reuse
🇦🇺Aussie-ownedPractical family support
Product details +
Big Kid Undies (With a Safety Net Built In) 🩲
The final step before real undies. Soft bamboo underwear that catches small accidents while helping kids feel ready for the big kid world.
Why They Work
- Feel-wet design: lets kids recognise accidents and build toilet confidence
- Pull-up style: easy for little ones to dress themselves
- Reusable & eco-friendly: saves money and reduces waste compared to disposables
- Comfy & safe: 95% bamboo on skin, PFAS-free, OEKO-TEX certified
What Makes Them Different
These aren't nappies or training pants. They're the bridge to proper underwear, designed for kids who are nearly there but still have the occasional miss. Light absorbency catches small accidents without the bulk.
View Sizing & Materials In The Below 'Product Size & Material' Drop Down.
Made For
✔ Kids nearly done with toilet training
✔ Daycare & outings
✔ Building independence
✔ Families who want an eco-smart alternative
Size and materials +
- Size 2/3: waist 22 cm, side length 13.5 cm, leg opening 14 cm
- Size 3/4: waist 23 cm, side length 14.5 cm, leg opening 15 cm
- Size 4/6: waist 24.5 cm, side length 15.5 cm, leg opening 16.5 cm
Measurements are taken with the garment laid flat.
- Shell: 95% bamboo, 5% spandex
- Skin-side gusset: 100% antibacterial cotton
- Absorbent layer: 80% cotton, 20% polyester terry
- Waterproof layer: 100% cotton with a PU membrane
Made with OEKO-TEX Standard 100 certified materials.
How to use +
- Pull on like regular underwear during the final stage of toilet training.
- Encourage your child to pull them up and down independently.
- Change after an accident so they stay comfortable and recognise what happened.
- Machine wash cold, then tumble dry low or line dry.
Protection level +
- Light protection for children who are mostly dry
- Designed to catch the occasional small accident
- Lighter and slimmer than Training Pants
- Not designed for a full bladder release, naps or overnight protection
Shipping and returns +
- Free shipping over $65 on Australian orders
- Orders placed before 1pm AWST, Monday to Saturday, are dispatched the same day
- First-time customers can test one item from their first order under our 60-day risk-free trial
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Real undies. Real safety net.
95% bamboo viscose, so soft they won't want to take them off. The slim 4-layer leakproof gusset is hidden inside the lining, not bulked up between the legs.
Outside, they look like regular undies. Inside, enough to catch one accident before the toilet.
Big-Kid Feel
A slim shape helps children practise wearing underwear without the bulk of a disposable pull-up.
Bamboo Soft
The stretchy 95% bamboo shell is made for comfortable all-day wear at home, daycare and outings.
Simple Sizing
Three familiar clothing sizes cover ages two to six, with waist and leg measurements in the size guide.
Wash and Reuse
Keep clean pairs in rotation and wash them again after each small accident.
Two Fun Prints
Whales and Unicorns make getting dressed feel more exciting during the final toilet-training stage.
QUESTIONS, ANSWERED
Everything parents ask us
Still unsure? Our Aussie team is happy to help.
What stage of toilet training are these for? +
Training Underwear is designed for stage three, when children are mostly dry and ready to wear underwear but may still have the occasional small accident.
How much do they absorb? +
The slim four-layer gusset is designed for small accidents and leaks. It is not intended to contain a full bladder release or replace a nappy.
Which size should I choose? +
Choose your child’s usual clothing size: 2/3, 3/4 or 4/6. The size guide beside the selector includes waist and leg measurements if your child is between sizes.
Can I mix Whales and Unicorns in a bundle? +
Yes. Choose a print separately for every pair in the 5-pair or 10-pair pack. You can mix both prints or repeat a favourite.
How many pairs do I need? +
One pair is a simple way to try the fit. Five pairs gives you a useful starter rotation, while ten pairs gives more room for daycare, outings and wash days.
Can they be used overnight? +
No. Training Underwear is for light daytime protection during the final toilet-training stage. Use an appropriate night nappy or dedicated bedwetting product overnight.
How do I wash them? +
Change after an accident, then machine wash cold. Tumble dry on low or line dry, following the care label.
When will my order ship? +
Orders placed before 1pm AWST on a dispatch day usually ship the same day. Free shipping applies to Australian orders over $65.
Try it with our 60-day risk-free trial.
First time with Rudie Baby? Test one item from your first order. If it is not right, contact us within 60 days for a refund on that item, excluding shipping. Conditions apply.
