The staff is kind enough to provide with additional blankets on demand. (littlebigtraveler.com)
They are also a great additional blanket to lay on baby's legs while sleeping for extra warmth. (topbabyspot.com)
Avoid the use of additional blankets and bedding other than the sleep sack, and make sure everyone who cares for your baby knows how to use the sleep sack safely. (howtoadult.com)