The Safety 1st Snug Fit Bed Rail offers additional security by attaching at the top of the mattress instead of adjacent to the mattress like traditional style bed rails. A color coded safety position indicator lets the parent know when properly positioned and locked. Eliminates possilbe entrapment position between bed and bed rail. This bed rail meets new CPSC bed rail standards. The bedrail cannot be used in place of a crib. Never use on a bunk bed, water bed, a bed with an inflatable mattress or a toddler bed.