This 47-in rail swings down flat against the bed frame, so a parent can change sheets or lift a child out without unbolting anything. A metal core wrapped in oxford cloth over PP cotton padding softens the contact point, and the cover is removable and washable after the inevitable spill. T-shaped legs slide 6.3-in under the mattress, and an adjustable buckle strap runs beneath to lock the rail onto any bed with a mattress 2.4-in thick or more. Rounded corners and ASTM and CPSIA certification back the safety claims and no tools are needed for assembly.