If you are not sure about the body panel size, which mostly depends on the size of your child, please measure your child in the following way: while the baby is seated on the floor please measure along their back from the floor to the bottom of the ear – as instructed in the photo below:
I M P O R T A N T: Please take the measurement a couple of times to make sure that it is accurate. 
To help you determine which size of the carrier would be best, you can also take into consideration the age of your baby. However, please do not base the size of the body panel solely on your baby’s age. Children, just as adults, can be of different height, body size and weight. Here are the suggested sizes for some of the ages:
Our baby carriers can “grow” with the child thanks to panel regulation. The height and width of the panel can be adjusted even up to 12 / 13 centimetres in bigger sizes. It means that for example size preschool +++ 23″ x 23″ (58 cm x 58 cm) can be adjusted to toddler 18″ x 18″ (46 cm x 46 cm). Thanks to this option our baby carriers can be used for many years or with children of different age. 
P L E A S E   N O T E: that these are merely suggestions based on the most often chosen sizes for a particular age

If you are unsure which size would be best for your baby, you can always email us: info@madamegoogoo.com