The baby’s room should be kept at the AAP recommended temperature for babies, which is recommended to be on the cooler side. Of course, every baby is different and some babies may run warmer than others. Like with any baby sleep product, parents should make sure their baby is at a comfortable temperature. Babies' hands and feet can often feel cold. The best way to check their temperature is to feel their chest or back, as hands and feet are usually cooler. We recommend dressing the baby in a diaper or a onesie under the Magic Sleepsuit—no more than one layer of light cotton.