Sleep sacks can be used starting at birth. They provide warmth, comfort, and security for newborns while eliminating the risk of loose blankets. Look for newborn-specific sacks with appropriate TOG ratings and a swaddle design. As baby grows, transition from swaddle sacks to wearable blankets with free arm movement by 2-3 months old.
Sleep sacks prevent SIDS and increase safety by eliminating loose bedding. Loose blankets are a leading SIDS risk as babies can pull them over their heads and suffocate. Sacks contain baby firmly to prevent wiggling down under covers. Quality sacks are designed to prevent overheating by allowing airflow and breathability. Sacks also prevent startles that could lead to head covering. Parents report babies startle less often when cozily wrapped. By regulating temperature and preventing hazardous bedding situations, sleep sacks provide a secure micro-environment for sleep.
Sleep sacks are generally considered safer and better than swaddling after 2-3 months. While swaddling can soothe newborns, sacks reduce associated risks of hip dysplasia, overheating, and SIDS. Sacks provide the snugness and security of swaddling but allow healthy movement and self-soothing. They are also easier to use than wrapping a swaddle blanket.
