For a baby in the first year, the simplest safe-sleep approach is to keep loose blankets out of the sleep space. The American Academy of Pediatrics (AAP) recommends a firm, flat sleep surface with no loose bedding or soft objects. Health Canada also notes that babies do not need blankets for sleep and that an appropriately sized sleep sack can be used instead.
When Can a Baby Sleep With a Blanket?
The AAP safe-sleep recommendations apply through a baby’s first birthday. During that first year, keep loose blankets, pillows, stuffed toys, bumpers, and other soft items out of the crib or bassinet.
After the first birthday, the decision depends on the child’s development and sleep setting. There is no need to rush the transition. If your child still sleeps well in correctly sized sleepwear or an arms-free sleep sack, a loose blanket is not required.
Why Loose Blankets Are a Problem for Infants
A loose blanket can move over an infant’s face and create a suffocation hazard. It can also contribute to overheating. Young babies do not need adult-style bedding to sleep comfortably.
What Can You Use Instead?
Use fitted sleepwear appropriate to the room temperature. Many families also use a wearable sleep sack. If you use one, choose the correct size and follow the product’s temperature and layering instructions.
Health Canada warns that a sleep sack that is too large can allow a baby to slip down inside, while one that is too small can restrict hip and leg movement.
Do You Need a Blanket With a Sleep Sack?
No. Health Canada specifically notes that when a sleep sack is used, an additional blanket is not needed.
What About Swaddling Blankets?
A swaddling blanket is used differently from loose bedding, but swaddling has its own safety rules. A swaddled baby must be placed on the back, the wrap must allow breathing and hip movement, and swaddling should stop as soon as the baby shows signs of trying to roll.
Do not use weighted swaddles or weighted blankets for infants.
Loose blankets and infant sleep are different questions: keep loose bedding out of an infant sleep space, use swaddling only while developmentally appropriate, and follow current guidance as children grow.
Should a Baby Wear More Clothes Instead of a Blanket?
Not automatically. More layers can cause overheating. Dress the baby for the actual room temperature using simple, fitted sleepwear rather than trying to recreate an adult bed with multiple layers and covers.
What About Winter?
Cold weather outside does not change the loose-bedding rule for infant sleep. A heated bedroom may already be comfortable. Use appropriate pajamas and, if desired, a correctly sized sleep sack that matches the room and product instructions.
What About Summer?
Warm rooms may require lighter sleepwear. Do not add a blanket simply because it is part of the usual bedtime routine. Adjust the clothing and sleep sack weight instead.
When Is a Toddler Ready for a Blanket?
After infancy, sleep needs change gradually. The exact timing can depend on development, whether the child is still in a crib, and the family’s setup. If you are unsure, ask your child’s healthcare professional and follow the instructions for the sleep space being used.
A blanket is also optional. Some toddlers continue using an arms-free sleep sack comfortably.
Avoid Weighted Blankets for Babies
Weighted blankets and weighted sleep products are not recommended for infants. Do not use weight as a way to keep a blanket in place or help a baby sleep longer.
Shop Sleep Sacks and Swaddles
For a wearable option, browse Baby Sleep Sacks. For families who are still in the pre-rolling swaddle stage, see Baby Swaddle Blankets. Always choose the correct size and follow current safe-sleep guidance.
Frequently Asked Questions
For infant sleep warmth, dress for the actual room and use appropriate wearable sleep clothing rather than adding loose or weighted blankets.
Can a newborn sleep with a blanket?
The safer approach is no loose blanket in the infant sleep space. Use fitted sleepwear or a correctly sized wearable sleep sack instead.
Can a 6-month-old sleep with a blanket?
No loose blanket is recommended under AAP infant safe-sleep guidance.
Can a 12-month-old sleep with a blanket?
The AAP infant safe-sleep recommendations apply through the first birthday. After that, consider the child’s development and sleep setting, and ask a healthcare professional if you are unsure.
Is a sleep sack safer than a loose blanket for an infant?
A correctly sized, arms-free sleep sack is a common wearable alternative to loose bedding. Follow the product instructions and make sure it fits properly.
Related guide: How Many Sleeping Bags for Newborn?.
Related guides: Baby Blanket Size Guide
If your baby is still being swaddled, also review how to recognize a swaddle that is too tight and current safe-sleep guidance.
Bottom Line
For babies in the first year, keep loose blankets out of the sleep space. Use correctly sized sleepwear and, if desired, an appropriate sleep sack. There is no benefit to rushing a child into adult-style bedding.
Sources: AAP / HealthyChildren.org: Safe Sleep and Health Canada: Dressing your baby for sleep.
