It is better to avoid keeping soft materials in the infant’s sleep environment. These include pillows, comforters, quilts, sheepskins, cushion-like bumper pads and stuffed toys. Because loose bedding may be hazardous, blankets, if used, should be tucked in around the crib mattress. Sleep clothing, such as a sleep sack, may be used in place of blankets.
Avoid overheating and over-bundling. The baby should be lightly clothed for sleep and the the mostat set at a comfortable temperature.
Mothers should not smoke during pregnancy, and babies should not be exposed to secondhand smoke.