Pillows and blankets should stay out of your baby’s sleep space for at least the first 12 months. Most safety organizations recommend waiting until 18 months or older before introducing a pillow, and many parents hold off until their child moves to a toddler bed, typically between ages 2 and 3. Here’s what you need to know about timing, risks, and how to keep your child comfortable in the meantime.
Why the First Year Is Off-Limits
The American Academy of Pediatrics is clear: keep pillows, blankets, quilts, comforters, and any other soft objects out of a baby’s sleep area. These items can obstruct a baby’s nose and mouth, and airway obstruction from soft objects or loose bedding is the most common cause of accidental infant suffocation. The NHS in the UK echoes this, advising against pillows or duvets for any baby under 1.
The U.S. Consumer Product Safety Commission reported that between 2019 and 2021, an average of 174 infant deaths per year were associated with nursery products. Of those, 126 deaths over the three-year period involved unsafe sleep environments, including soft bedding added to cribs, play yards, or bassinets.
How Pillows and Blankets Actually Cause Harm
The risks change as your baby grows, but they don’t disappear quickly. Among infants who suffocated from soft bedding, 34% were blocked by blankets, 22% by pillows, and 23% by adult mattresses. Pillows caused airway obstruction twice as often in babies 4 months and younger compared to older infants, because younger babies lack the neck strength to lift their heads and clear their airways.
Older babies face a different problem. Nearly half of infants between 5 and 11 months whose airways were blocked by blankets had become entangled in them. These babies were mobile enough to roll into or grab the fabric but not coordinated enough to free themselves. This is why even a baby who seems strong and active isn’t necessarily safe with loose bedding.
When to Introduce a Blanket
Most pediatric guidelines point to 12 months as the earliest you can consider a loose blanket in the crib, though waiting longer is perfectly reasonable. When you do introduce one, choose a lightweight, breathable fabric. Muslin cotton or bamboo blends work well because their open weave allows airflow, reducing the risk of overheating. Overheating is itself a known risk factor for SIDS.
A good size for a toddler blanket is roughly 47 by 47 inches (about 120 by 120 cm). That’s large enough to cover a toddler in a crib or toddler bed but not so oversized that it bunches up into a hazard. Avoid blankets with buttons, ribbons, heavy embellishments, or loose threads, all of which pose choking risks. Skip heavy quilts or comforters in favor of something your child can easily push off their face.
When to Introduce a Pillow
There’s no rush. Most toddlers sleep perfectly fine without a pillow, and the AAP doesn’t specify a precise age for pillow introduction. A reasonable guideline is to wait until at least 18 months, and many sleep experts suggest waiting until the transition to a toddler bed around age 2 or later.
Some signs your toddler might be ready for a pillow: they rest their head on a stuffed animal, rolled-up blanket, or their own arm while sleeping. They may show interest in using a pillow like older family members do. Side sleepers in particular benefit from a pillow because it keeps the head and spine aligned, but this only matters once the child is old enough to use one safely.
When you do introduce a pillow, choose one designed for toddlers. It should be small, thin, and firm. A firm pillow supports a developing neck and spine far better than a soft, puffy adult pillow, which can still conform around a young child’s face and restrict breathing.
Sleep Sacks as a Safer Alternative
For babies under 12 months who need warmth, wearable blankets (also called sleep sacks) are the recommended solution. These are sleeveless, zip-up garments worn over pajamas that keep your baby covered without any loose fabric in the crib. They can’t ride up over the face or get tangled around limbs.
Sleep sacks come in different warmth ratings measured in TOG (Thermal Overall Grade). A 0.5 TOG works for warm rooms above 75°F, a 1.0 TOG suits moderate temperatures between 68 and 75°F, and a 2.5 TOG is appropriate for cooler rooms between 61 and 67°F. The AAP also recommends dressing babies in layers of clothing rather than using blankets, since layers are easier to adjust and can’t cover a baby’s head.
All your baby needs for safe sleep is a firm crib mattress, a fitted sheet, and a sleep sack or appropriate layers of clothing.
Inclined Pillows and Reflux
Some parents consider placing a wedge or pillow under their baby to help with reflux, and some healthcare providers have recommended it in the past. The AAP explicitly advises against inclined sleep devices. Inclines between 10 and 30 degrees have not been shown to significantly improve reflux symptoms in studies, and they introduce additional suffocation and sliding risks. Babies with gastroesophageal reflux should still sleep flat on their backs on a firm surface.
Timing the Crib-to-Bed Transition
If your toddler is moving from a crib to a toddler bed, that’s a natural time to introduce a pillow and blanket together. Using the same crib sheets or blanket your child already knows can help ease the transition, since familiar textures and smells make the new sleep environment feel less foreign. Start with the lightweight blanket and toddler pillow described above rather than jumping to full-size adult bedding, which is too bulky for a small child to manage safely.