What is a sleep sack? A sleep sack is a sleeping bag with a neck hole and arm holes, and is also known as a sleeveless bunting, or wearable blanket. It replaces loose blankets for safer sleep, and cannot be kicked off, so baby stays safely covered for warmth all night long. It is sleeveless to allow for airflow to avoid overheating baby. Overheating is a risk factor for SIDS, hence the sleeveless design to avoid overheating. SwaddleDesigns zzZipMe Sacks are sleeping sacks with a dual pull (2-way) zipper instead of a one-way inverted zipper. Our 2-way zipper makes is easier to use than an inverted zipper, because the caregiver does not have to try to connect the zipper under the baby’s chin.
When should you stop using sleep sacks? You should stop using a sleep sack with a swaddle wrap when baby shows signs of rolling over. The AAP recommends that babies who show signs of starting to roll over should no longer have their arms fully restrained in a swaddle, so sacks with wraps with Velcro® or other wrap fasteners should no longer be used, typically past 8-12 weeks. Sleeping sacks without a swaddle wrap may be used into toddlerhood. So sleeveless sleeping sacks or wearable blankets or zzZipMe Sacks may be used past 18 months of age. If baby is not sleeping well in a loose fitting sleeveless sleep sack then try using SwaddleDesigns Transitional Swaddle Sack which has uniquely shaped little sleeves that partially suppress the startle reflex when the mitten cuffs on the ends of each sleeve are closed, and baby, if they were to roll over, has enough mobility use their arms to push up to reposition their head because their arms are not fully restrained.
What’s the point of sleep sacks? Sleeping sacks provide a safe cover for babies who can roll over and no longer experience awakenings caused by the startle reflex. Sleeping sacks replace loose blankets which should not be used because loose blankets or quilts can become suffocation or entanglement hazards.
Are weighted blankets or weighted sleep sacks ok to use? The AAP recommends against using weighted sleep sacks or weighted blankets with babies. Weighted sleeping sacks and weighted blankets have not been determined to be safe for sleep by the AAP task force on SIDS, so the AAP does not recommend using them.
How do I know what size of sleep sack is right for my baby? Your baby's age and length are going to play the biggest roles in determining what size of sleep sack you'll want to purchase to give them the best night's sleep that's as safe as possible. Check out the sizing chart below for more information!