Keep soft objects and loose bedding away from the infant’s sleep area to reduce the risk of SIDS, suffocation, entrapment and strangulation
Although they are widely available on the market, crib bumpers and pads, stuffed animals and toys, pillows, and blankets are not recommended in the crib as they can easily block your baby’s breathing. The crib should only contain your baby, the mattress, and a fitted crib sheet.
If appropriate for the climate, infant sleep clothing, such as a wearable sleep sack or wearable blanket is preferable.
https://health.choc.org/new-safe-sleep-for-babies-practices/