It is very important that you check on your newborn baby regularly to ensure that s/he is not too hot or too cold. To do this, simply place your fingers gently onto her back or chest. It is normal for a young baby’s fingers and toes to feel cold, so this is why it’s important to check the back or chest.
What your baby wears will depend, not only on the temperature of the bedroom, but also on your individual baby, and, with regular checking, you will soon get used to knowing what level of clothing works best. As a general rule, in the recommended nursery temperature of 16-20Oc, we recommend either a cotton bodysuit (short sleeves and no legs), or a cotton sleepsuit (with legs and arms). If the bedroom is on the cool side, or your baby feels cool to the touch on her back/chest, then it is fine to layer the clothing, using both a bodysuit and sleepsuit.
In a very warm bedroom, you could simply use the Gro-swaddle with no clothing underneath. If the bedroom is hot (over 24OC), try to cool it down, and if this is not possible, consider not using the Swaddle until it is cooler.
As your baby gets older and you want to move to underarm swaddling, so that your baby’s arms are not covered by the Swaddle, you may want to adjust the level of clothing to account for this. For under-arm swaddling, in the recommended nursery temperatures of 16-20OC, a cotton long-sleeved sleepsuit or both a bodysuit and long-sleeved sleepsuit are recommended.