Crib liners are soft fabric barriers designed to fit inside a baby's crib. They are intended to prevent a baby's limbs from getting stuck between the crib slats and to protect the baby from bumping against the hard surfaces of the crib. Crib liners come in various colors and patterns, allowing parents to match them with their nursery decor. However, safety experts often advise against using crib liners due to potential risks. They can pose a suffocation hazard or increase the risk of SIDS (Sudden Infant Death Syndrome) if a baby rolls into them. Parents are encouraged to consider safer alternatives, such as sleep sacks or swaddles.