Are Nappy Sizes Universal?

Just as the case is with baby clothing sizes, when it comes to diapers, there's no universal guide for how each size will fit each baby. ... “That being said, the main thing to remember is that diaper sizes are based on the weight and size of the baby, not their age.”

Are all nappy sizes the same?

Much like shoe sizes, nappy sizes go up in progression of numbers, where larger numbers indicate larger nappies. Given that every baby is different, one of the best ways to choose a nappy size for your little one is by their weight. Babies usually get weighed at birth and during regular health visits.

How do you tell what size a nappy is?

If you can't comfortably fit two fingers under the waistband of the fastened nappy, it's time for a bigger size. You may need to go up a size if you notice red marks on your baby's tummy or thighs when you remove the nappy. If the nappy isn't fully covering your baby's bottom, choose a bigger size.