Is your baby leaking through their diaper at night? Very few things have the power to interrupt your beauty sleep quite like an uncomfortable, restless baby.  Oh, and then there’s the extra washing and cleanup that nobody has time for.

But here’s the good news: you’ll never need to aimlessly trawl the internet for phrases like “baby boy diaper leaking at back” again – because we have the perfect solution to the leaking diaper dilemma.

We completely understand your frustration – that’s why we’ve created this guide to stop the nightly leaks for good. 

We’re sharing the tips that truly work to end leaking. Say goodbye to midnight changes and hello to peaceful nights for both you and your little one!

Stopping diapers leaking up the backs of babies everywhere

Read on to find out exactly how you can stop leaking diapers, by ensuring the right size and then some simple tips to ensure they are being put on correctly. 

Are leaking diapers too big or too small?

The number one culprit for a leaking diaper is size, if it’s too big or small then you’re likely to experience problems. 

How to tell if a diaper is too small?

If there are red marks around your baby’s tummy or thighs, or if it feels a little too snug, it might be time to move up a size. 

If you’re getting blowouts or persistent leaks, that can be another sign that a diaper is too small and it’s time to move up.

How to tell if a diaper is too big?

Sometimes the problem can be that the diaper is too big. If there are gaps around the legs and tummy, or it's sitting too high at the front or back, you may need to try a smaller size. 

As your baby moves up a size, the diaper will have more SAP (super absorbent polymer) and chlorine-free wood fluff in the core, boosting absorbency for the bigger volumes needed as they get older.

Choosing the right diaper size

At Joonya, our guided weight ranges are for the so-called ‘average baby’, if one even exists! 

Every baby is unique in the shape and size of their thighs, waist and buttocks. Which is why we make it easy for you to try different sizes with our trial packs. 

You can try a couple of diapers sizes to check the fit before you commit to buying a full carton with 6 bags.

What to do when your baby’s diaper keeps leaking on one side?

Avoiding a leaking diaper on one side is frustrating, but these tips should end the problem. It’s as easy as checking: 

• The leg cuffs (frilly seam around the legs) are pulled out and not tucked in
• The velcro tabs are brought across the tummy firmly before being stuck to seal
• All absorbent fabrics are fully tucked inside the outer shell
• Your little boy’s private parts are facing downwards to prevent it pointing up at the gap between his tummy and the diaper.

What are the best diapers for leakage?

Joonya is passionate about creating allergy friendly, leak-free diapers that are sustainable and disposable. 

Here’s how our sustainable diapers are changing the lives of babies and parents everywhere - while keeping the planet happy:

• They’re designed with advanced channel technology to keep your baby dry, comfortable, and free from a leaking diaper all through the night
• They offer a snug, secure fit with high-absorbency cores that distribute moisture evenly, preventing leaks at every angle
• Because we know each baby is unique, we’ve made it easy to find the right fit with trial packs and helpful size guides
• We use eco-friendly materials, certified by EU Ecolabel and FSC® for sustainable practice
• Our diapers are non-toxic and free from harsh chemicals, ensuring safe use for sensitive skin and are dermatologically tested for allergy and rash prevention
• Of course, they’re vegan and cruelty-free, certified by PETA
• They’re available in trial packs for easy size testing and bulk-buy options to save on cost and reduce packaging waste

At Joonya, we’re more than just baby products – we’re an Australian family-owned brand that believes in making safe, stylish, and eco-friendly essentials accessible to all. 

We started with a mission to challenge big corporations, bringing you products free from harsh ingredients and backed by independent certifications for quality and transparency.

My baby is on the cusp of two sizes – which one should I go for to prevent leaks?

If your baby is on the cusp of two different sizes, we recommend going for the bigger size to prevent a leaking diaper 

In the case where you still get leaks, it would likely be a short wait of a few weeks until your baby starts to fit the higher size. You could then order a single bag to tie you over from our trial bundle page.

Can I trial more than one size if I’m not sure what size is right?

Absolutely! The Joonya trial “bundle” can be ordered once (which adds a free pack of wipes), and for any extra bags in different sizes, you can just order them individually from lower down on the same trial page.

I can see thin stripes when I hold up your diaper to the light – is this a product fault contributing to leaks?

The thin stripes on Joonya diapers you see are channels and are definitely not a product fault! In fact these channels are designed to whisk moisture away from baby’s skin, giving him or her a longer sleep! 

Channel technology is becoming the new standard now for advanced diapers.

Can I return diapers if I find they start leaking? What is your return policy for this?

In the unlikely case that leaks are persistent then we are happy to refund any unopened bags you still have (there are 6 inside each bulk carton). 

We will send you a discounted shipping label which would be deducted from the pro-rata refund processed upon receiving back the unopened bags to our nearest warehouse location. Contact us to arrange with our friendly customer service staff.

Final thoughts on leaking diapers

You can say goodbye to leaking diaper changes and hello to happier, uninterrupted nights when you choose Joonya for trusted protection that’s gentle on both your baby’s skin and the planet.

See how Joonya eco diapers for sensitve skin are changing the game. Order a trial bundle today! 

This is the perfect way to test drive a full-size pack of our diapers and wipes before enjoying our subscriber savings.  

If you have any questions at all, reach out to our friendly team today.