 The U.S. Consumer Product Safety Commission and the U.S. Food and Drug Administration are warning parents and caregivers to stop using sleep positioners. A sleep positioner is a product that is used to keep babies on their backs while sleeping. CPSC has received dozens of reports of infants who were placed on their backs or sides in sleep positioners, only to be found later in potentially hazardous positions within or next to sleep positioners. If babies are placed on their stomachs on a flat sleep positioner, the baby's faces can get trapped against the bolster, causing babies to suffocate. Babies placed on their sides with the bolster at their backs can easily roll onto their stomachs with their faces pressed into the product, blocking their breathing. Babies placed on an inclined sleep positioner can scoot around and end up with their heads trapped between the positioner and the side of the crib. This can cut off a baby's ability to breathe. For the safest sleep environment possible, place babies to sleep on their backs. Don't put babies to sleep on top of pillows, comforters, or thick quilts. And don't place these items or large stuffed toys in your baby's crib, bassinet, or play yard. The safest crib is one with only a mattress and a tight fitting sheet. Parents should stop using sleep positioners or any device to hold an infant on his or her back or side for sleep. These are unnecessary and can pose a suffocation risk to your baby.