Unlike clothing, diaper size isn’t chosen based on your baby’s age in months or height, but rather on your baby’s weight, which is the key factor when buying diapers. If the size isn’t right, leaks or irritation can occur, so it’s important to know which sizes are available and which one is ideal for your child. At LILLYDOO, we want to help you with this task. Below, we’ve outlined the key points to help you find the right diaper size for your baby and the criteria to consider when buying.

What are the different diaper sizes?

Most children wear diapers from birth until around three years old. The timing depends on your baby’s developmental progress, which, as you know, can vary greatly from one child to another. During this period, you’ll find diapers ranging from size 1 to size 7. Each size is designed based on your baby’s weight, as this is one of the main criteria when choosing the right diaper size. Size 1 corresponds to diapers for newborns weighing at least two kilograms. From there, sizes increase up to size 7, which is suitable for older children weighing more than 15 kilograms (up to a maximum of 30 kilograms). To see the weight range for each size, you can consult the size chart.

Which diapers are truly the right ones?

Sometimes, a diaper may not fit properly even if the size matches your child’s weight. That’s because children, like adults, can have very different body shapes regardless of weight. A correctly sized diaper shouldn’t leave marks on the skin, but it shouldn’t be too loose either. It should allow your baby to move freely without causing leaks during movement.

Diaper size is very dynamic and can change quickly, just like your baby. Babies often grow fast before you even notice! That’s why it’s a good idea to keep a spare pack in the next size up on hand. If you’re unsure about the size, you can try our * before purchasing a full pack.

* You only pay the shipping costs for the sample package. We give you the products for free (10 hypoallergenic diapers and 15 wet wipes).

How to know when it's time to change the diaper size?

Several signs can help you tell when it’s time to move up to a larger diaper size. For example, if it becomes difficult to fasten the diaper and it presses against your little adventurer’s tummy, it’s time to size up. To check whether the diaper fits well, make sure you can easily slide two fingers between the diaper and your baby’s skin at the waist. If the diaper hugs the body comfortably without being too tight, the size is correct. The diaper also shouldn’t press into your baby’s legs. If leaks happen repeatedly, it may also be time to switch to a larger size, as your little one may need greater absorption.

What if she changes size before expected?

You may have found the perfect diaper size and then, suddenly, from one day to the next, your baby no longer fits. Don’t worry: with the you can mix diaper sizes from 1 to 7 and have them delivered directly to your home. And if your little adventurer grows faster than you expected, you can simply and skip your next delivery with the new size.

Remember that you can to see whether the diapers suit you and meet your needs.