Diaper size 6: until what age or weight?

In collaboration with Rokiyah Hosen

Relecture professionnelle

Is your child growing up and about to turn 2? He's learning to express himself better and better, and is becoming increasingly comfortable and aware of his body. At this age, you don't yet know whether to switch to the next size up or whether it's better to switch to training pants. We'll give you all the advice and recommendations you need in this article.

Everything you need to know about size 6 diapers

The size 6 diaper is the least-worn diaper. In fact, it's a diaper size suitable for babies weighing between 16 kg and 30 kg, and is worn around the age of 2. This is also the age when many children start to become potty-trained and stop wearing diapers during the day, or switch to training pants. However, the age of 2 remains an average, because once again, the size of diaper to use is not really determined by age, but rather by weight and morphology. Some toddlers will need to go up to size 6 by 18 months, while others won't even need to use this size.

When should I start using size 6 diapers?

In the same way as for the transition to previous sizes, there are certain signs that should tell you to switch to the next size up, i.e. size 6. First of all, if you regularly experience leaks, it's obvious that you need to change sizes.

If you're finding it harder than before to close the diaper tapes and they're coming loose, that's another indication that you need to go up a size.

A final clue to upgrade: if you notice red marks on your baby's skin during diaper changes, this means that the diaper is too tight and therefore too small. A diaper that's too small and too tight can cause leaks and is uncomfortable for your baby: switch to size 6.

How many size 6 diapers should I buy for my baby?

The number of diapers to buy for your baby can quickly become a headache when you become a mom or dad. When it comes to size 6, there's no need to stock up on too many diapers: this is often the period when children make the transition to potty training. Please refer to our sizing guide for more information:


Number of packs in size 4

Number of packs in size 5

Number of packs in size 6

from 10.5 to 12.5 kg



from 12.6 to 13 kg


from 13.1 to 13.5 kg



+ over 13.5kg


How to choose the best size 6 baby diaper?

Even if your baby is just starting to be potty-trained, the last diapers he or she needs should be comfortable and pleasant to wear. A good diaper is one that's comfortable for your child, holds him in place without being too tight, and is absorbent enough to prevent any leakage problems.

Your baby's skin is also very sensitive , and is in direct contact with the diaper materials. So it's very important to make sure that the acidity, moisture and chemical composition of the diaper won't cause redness or other types of irritation on baby's bottom. That's why it's important to find out about the composition of the different layers making up the diaper, including: the contact layer, the absorbent pad, the leak-proof material, the outer material, etc...

If you can't find the analysis reports, or they're not accessible, this should be a warning to you: beware of a lack of transparency.

Some marketing claims are in fact unreliable information and in no way signify that the diaper is completely safe for your baby's skin. For example, claims such as "hypoallergenic, dermatologically tested etc." are mandatory, but in no way guarantee the quality of the diaper.

You can refer to the studies that are regularly published to draw attention to the safety of diaper composition, in particular with consumer associations or the Agence Nationale de Sécurité Sanitaire, as well as the DGCCRF.

No more diapers: how do you potty train your baby?

When your baby starts potty trainingdiapers are no longer necessarily the right solution for your child. There are several possible methods:

Training pants

The alternative we recommend when your child is potty training is the training pants. They're washable and therefore reusable, and guaranteed to be completely safe for your baby's skin. At Elia, we even offer training pants to match mom's panties! So your child can feel like a grown-up!


Diapers will help your child become potty-trained. They're easy to take off and put on, just like panties, so they're ideal for going to the bathroom.

However, you can keep the disposable diaper for the night: it provides better support and helps limit leaks.

If your child is not yet ready for potty training, it's best to continue using conventional diapers. It will be easier for you to clean and change your child than if he or she is in stand-up diapers.