Bring your baby a more comfortable sleep<br> Please refer to the size chart when you purchased:<br> Age--------------Chest Length-------Length-------Sleave Length<br> 0-3 Months-----44cm/17.32"--------55cm/21.65"--------26cm/10.24"<br> 3-6 Months-----46cm/18.11"--------59cm/23.23"--------28cm/11.03"