Zippered sleep sacks can be a safe option when precautions are followed. Choose a sack with a durable zipper designed not to catch fabric or skin. Inspect regularly for broken teeth or damage and replace if issues arise. Ensure zippers do not compress neck, chin or compress the torso. Close the zipper fully during use. Coach older babies on safe zipper handling. Avoid DIY sacks with improvised zippers.
You can use a sleep sack for as long as it fits your child and they find it comfortable. Most sleep sacks are suitable up to 2 or 3 years old. Transition to a regular blanket when your child starts climbing out of the crib for safety. Follow the manufacturer's guidelines and recommendations for the appropriate age and size range. Individual preferences may vary, so observe your child's comfort and needs.
• Keep sleeves rolled up so the zipper pull is not in reach of their hands.
• Try a sack that zips from top to bottom rather than bottom up if they unzip it from the feet.
• Gently restrain their hands or hold the zipper pull away when putting them down for sleep.
• Focus on consistent nap/bedtime routines so they learn when zippers are off limits.
• Praise and reward them when they keep the sack zipped overnight.