A baby should not sleep with a loose blanket during the first 12 months. Safer options are a fitted sheet and a wearable blanket or sleep sack instead.

Quick Scoop

Most pediatric guidance says to wait until at least 12 months old before introducing a blanket in the crib, because younger babies are at higher risk of suffocation and SIDS from loose bedding.

After 12 months, many parents start with a lightweight, breathable blanket and use it first during supervised naps or while the child is awake, then move to regular sleep if it goes well.

Safe sleep basics

  • Keep the sleep space free of pillows, stuffed animals, bumper pads, and loose blankets for the first year.
  • Use a firm, flat mattress with a fitted sheet.
  • A sleep sack or wearable blanket is a safer way to keep a baby warm before age 1.

What kind of blanket later

When your child is old enough, choose a thin blanket that is breathable and not oversized. Cotton or muslin-style blankets are commonly recommended over heavy quilts or weighted blankets.

Bottom line

For sleep, the simple rule is: no loose blanket under 12 months ; after that, introduce one gradually and keep it lightweight.