Are sleeping bags safe for newborns?
John Johnson
Updated on May 20, 2026
Baby sleeping bags are a good option as they prevent your baby's head from being covered, but they must be manufactured to the highest standard. A recent Which? safety test revealed that only three out of 15 baby sleeping bags from “well-known brands and online marketplaces” passed all of their stringent tests.
Can you put a newborn in a sleeping bag?
Lightweight, well-fitting baby sleeping bags are a good choice, too. Babies do not need hot rooms. All-night heating is rarely necessary. Keep the room at a temperature that's comfortable – about 16 to 20C is ideal.Can a baby suffocate in a sleeping bag?
Those sleeping bags that don't have shoulder straps or have a neck opening that is too big for the child's head, can cause an overheating or suffocation risk to your little one if their head was to slip inside.When can I start using a sleeping bag for my baby?
Around 12 weeks (or 3 months) this reflex starts to fade out and this is the point that you should really start to look at transitioning to a baby sleeping bag. If however, your baby is starting to show signs of rolling prior to 3 months I would advise that you make the move from swaddle to baby sleeping bag sooner.What should a newborn wear to sleep in?
When dressing your newborn for bed, follow this rule of thumb: dress the infant in one additional layer than what you'd be comfortable wearing at night in that room. Consider a onesie, sleep sack, or lightweight swaddle in warmer months. In colder months, opt for a long-sleeved onesie or a heavier sleepsack or swaddle.Unsafe baby sleeping bags: we show how four examples are dangerous
Can newborns sleep without swaddle?
Babies don't have to be swaddled. If your baby is happy without swaddling, don't bother. Always put your baby to sleep on his back. This is true no matter what, but is especially true if he is swaddled.Should I swaddle my newborn at night?
Yes, you should swaddle your newborn at night. The startle reflex is a primitive reflex that is present and birth and is a protective mechanism. With any sudden noise or movement, your baby is “startled” and her arms will extend away from her body, she'll arch her back and neck.How do I cover my newborn at night?
Place your baby in a swaddle if they wriggle a lot. Swaddle your baby in a swaddle blanket to add extra warmth and to help them to feel calm. Whilst you shouldn't place regular blankets over a newborn, it is fine to wrap them in a swaddle blanket, as this can't end up over their face.Do babies arms get cold in sleeping bags?
Baby sleeping bags are designed with armholes to allow air to circulate, so that your baby does not overheat. This is why baby sleep bags do not have arms on them. Young babies hands are often cold during the night, this does not necessarily mean that they are cold and they need more layers.Can a Grobag strangle a baby?
And three bags from Aldi, Grobag and Jojo Maman Bebe also failed at least one of our tests. The safety problems uncovered included neck openings that are too wide, which could lead to a baby slipping down into the bag and suffocating.When can I stop worrying about baby suffocating?
When can you stop worrying about SIDS? It's important to take SIDS seriously throughout your baby's first year of life. That said, the older she gets, the more her risk will drop. Most SIDS cases occur before 4 months, and the vast majority happen before 6 months.Are baby sleeping bags safe NHS?
Pillows and duvetsSheets and layers of blankets tucked in firmly below your baby's shoulder level or a baby sleeping bag are safe for your baby to sleep in.